gitlab/cerbero: Don't fail when there's no macOS cache

`test -d "${CERBERO_HOME}/dist/${ARCH}"` will cause the build to error
out if the dist dir doesn't exist, which will happen if there's no
cache, for example:
https://gitlab.freedesktop.org/seungha.yang/gst-plugins-bad/-/jobs/7405565

What we actually want to do, is to not perform the rsync if there's no
cache, since it means we want to rebuild from scratch; for instance,
if the current MR uses a custom cerbero branch of the same name which
won't have a prebuilt cache.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/398>

docker/windows: Update msys2 installer to 2021-02-15 version.

This fixes the PGP key installation issue.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/396>

gitlab: Allow du to fail in cerbero scripts

It's purely for informative reasons. `du` will fail on the sources dir
if a branch name has unicode in it due to an MSYS/MinGW bug. The long
term fix is to from MSYS/MinGW to MSYS/MinGW-W64 or MSYS2/MinGW-W64.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/395>

hotdoc: use latest pip version

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/394>

docker/fedora: run git gc after cloning the subprojects

Most of the subprojects specify depth=1 in the wrap file,
so this doesn't have a big effect atm.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/375>

citemplate: use meson 0.56 and suproject update --reset

The windows build will be updated in a later
commit.

Close #73 #74 #75

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/375>

citemplate: only spawn a single pipeline in Merge Requests

This is the 3rd or 4th time we are trying this yes, (!331),
but hear me out. This time is for Real!

Jokes aside, its possible to avoid spawning >1 pipeline per event
with gitlab 13.8.

https://gitlab.com/gitlab-org/gitlab/-/issues/201845

https://gitlab.com/gitlab-org/gitlab/-/issues/299409

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/391>

gitlab: update macos/ios tags for newer vm image

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/389>

ci_template: remove artifacts workaround for cerbero msvc

This was fixed 3 weeks ago and should no longer be needed.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/387>

ci_template: re-enable the extraction of logs for windows jobs

Most of the networking issues with the runner should be fixed now.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/385>

gstreamer-full: enable features unit test

As gst-build can select features to be exposed by
gstreamer-full, the test will check that feature
are present or not present according to the current
configuration.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/381>

Revert "ci: check commit using ci-fairy"

This reverts commit 12c1689aaaf307feb50f465565f6d752f16a1b0e.

Revert ci-fairy check-commits job for now as it seems a bit
buggy. It picks up commits that are not part of the branch
and breaks the CI.

Will investigate further and reintroduce it later.

ci_template: job to complain about allow-edit

Make sure merge requests have enabled the "allow-edit"
option in the MR so we can rebase them.

Close gstreamer/gstreamer-project#34

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/304>

ci: check commit using ci-fairy

See https://freedesktop.pages.freedesktop.org/ci-templates/ci-fairy.html#checking-commits

In this setup it will check for any leftover fixup!/squash! commits and
that messages don't have the 'Signed-off-by:' tag.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/304>

citemplate: build devtools for windows builds

explicitly enable the cairo plugin build as well

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/377>

Revert "cerbero: Never use cached cerbero git repo"

This reverts commit c3b5693736aea7798df87b10de48239ef7e43de7.

This broke the build and needs further investigation

https://gitlab.freedesktop.org/gstreamer/gst-ci/-/jobs/5630095

cerbero: Never use cached cerbero git repo

Sometimes the git repo cached on the docker image gets corrupted on
Windows, in which case there is no way to clean things and resolve
that error. For example: https://gitlab.freedesktop.org/bilboed/gst-plugins-bad/-/jobs/5517037

```
++ cp -a C:/cerbero/.git .
cp: cannot create regular file `./.git/objects/pack/pack-cbdde9dc4dd07bff6761e6715e20d7c0abe62b9e.idx': Permission denied
cp: cannot create regular file `./.git/objects/pack/pack-cbdde9dc4dd07bff6761e6715e20d7c0abe62b9e.pack': Permission denied
```

Always delete the cached git repo and copy a pristine copy from the
image. This will also avoid accumulation of garbage in the git repo.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/376>

citemplate: remove fdo.expires-after label

This is meant to be used for containers that are going
to be periodically rebuilt. For our usecase specifying
`fdo.upstream-repo` is enough to garbage collect all
the tags from the forks.

We also need to rebuild the images, so they don't have
include the label anymore.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/368>

docker/cerbero: remove bootstrap invocation

`bootstrap --build-tools=no --toolchains=no` now do nothing, and
just repeat what the bootstrap line above does which is to only
run the system bootstraper

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/368>

citemplate: tweak merge-request rules

With the MergeRequest rules template, its was impossible
to manually create or trigger a pipeline for a branch/commit
that was not part of a merge request.

This tweaks the workflow:rules such that there will always be
a pipeline for each commit (which will be set to a manual job trigger).

There is the downside that we will now be triggering 2 pipelines in
case of merge requests, but they will require manual action to be
started.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/369>

gstreamer-full: enable unit test

Run test-gst-full in gstreamer-full job

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/365>

fedora: rebuild image so it includes a newer subproject cache

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/364>

ci_template: try to enable merge-request pipelines again

Gitlab was slightly bugged in previous version, and we
had to use branch-only pipelines. Let's try this again.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/363>

Enable pango plugin on Windows

This tests that all fallbacks works to get pango plugin built with no
system dependencies available.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/360>

Revert "citemplate: Actually use the new cerbero_setup.sh script"

This reverts commit 19d7ff53424c5bd104b73755f9f640bff8169392

citemplate: Actually use the new cerbero_setup.sh script

Revert me after merge.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/361>

citemplate: Consistent naming for cerbero_setup.sh script

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/361>

cerbero ci: Make before_script wiping more thorough

Will avoid packaging errors due to the old package file still being
around from a previous job, such as in:

https://gitlab.freedesktop.org/nirbheek/cerbero/-/jobs/4804147

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/361>

windows: rebuild docker image

also:

Revert "citemplate: set the cerbero msvc build to allow_failure again"

This reverts commit 3dddfacfbf710fa71777488145594eb0abe11ee4.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/359>

cerbero ci: Wipe in before_script because gitlab doesn't

Noticed in this job, which failed because we rebuilt on top of an
existing builddir:

https://gitlab.freedesktop.org/nirbheek/cerbero/-/jobs/4772728

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/358>

citemplate: set the cerbero msvc build to allow_failure again

Very weird things going on..

```
UnicodeDecodeError: 'charmap' codec can't decode byte 0x9d in position 8608: character maps to <undefined>
```

https://gitlab.freedesktop.org/Hosang/gst-plugins-bad/-/jobs/4731636

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/356>

citempalte: fix string comparitson in rules

When quoting in rules it takes the string as literal and doesn't
expand the variable

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/353>

Revert "Switch MSVC job to manual till we can upload deps cache"

This reverts commit bdbec90a4939d5c31f800cc9f07646c820a7bd76.

Everything seems to be working fine.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/352>

Revert "cerbero ci: Actually use the new cerbero_setup.sh script"

This reverts commit ef981bafc9540ca795e3ed0a6eb37950859d5da5.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/352>

docker/cerbero: Do not remove toolchain downloads

We will use these when running bootstrap in the actual jobs.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/350>

cerbero ci: Add hacks for build tools

Instead of putting a hammer-like symlink to ../../gstreamer/cerbero,
do recipe-specific relocation hacks. Fixes random errors like:

```
++ ln -sf /builds/nirbheek/cerbero ../../gstreamer/cerbero
ln: ../../gstreamer/cerbero/cerbero: cannot overwrite directory
```

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/350>

cerbero ci: Refactor cerbero_before_script

We were doing a few things suboptimally:

1. Making a symlink from the current directory to
   ../../gstreamer/cerbero so that build-tools kept working, which
   should not be necessary since cerbero relocates all binaries inside
   the cerbero homedir after extracting the cache.

2. Hard-coding the cerbero builddir when building on Windows because
   `pwd` was outputting an MSYS-style path which Python can't read

3. rsync-ing all the contents of $CERBERO_HOST_DIR, which is
   bad because we should be building on top of the artifact cache.
   The only thing we want from $CERBERO_HOST_DIR is cerbero-sources
   (the network cache), and we can setup the toolchain during
   bootstrap with the new --system and --toolchains arguments which
   were split out of --system-only.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/350>

cerbero ci: Actually use the new cerbero_setup.sh script

Revert after merging.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/350>

manifest: Check all deps logs when picking cerbero commit

Instead of picking the 'slowest build', look at all the deps logs and
pick the commit that is mentioned in the maximum number of deps logs.

In practice, this will either be the newest commit or the previous
commit. If it's not the newest commit, we will warn and use an older
one.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/349>

citemplate: set PYTHONFAULTHANDLER for tests

In case python segfaults, which might happen for things with
a C-FFI like pygobject, make it so we get a proper backtrace.

https://docs.python.org/3/using/cmdline.html#envvar-PYTHONFAULTHANDLER

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/341>

manifest: Fix URL for cerbero deps log

There was a missing 'f' prefix, so the {branch} was not expanded.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/348>

manifest: Build useful error message

This helps detecting issue with optional steps like cerbero deps
lookup.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/348>

Revert "cerbero ci: Also disable the deps build"

This reverts commit 555c49f9d17aa7a8b9e650941002b52e4e6dd325.

The job is working fine now and takes slightly more time than the iOS
build, so it can be re-enabled.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/347>

cerbero ci: Sprinkle some 'time' commands in the script

Sprinkle some 'time' commands so we can measure how long things take
and we can know where to spend time optimizing first.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/346>

ci: Switch cerbero script URL back to gst-ci master

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/345>

cerbero ci: Also disable the deps build

There seems to be some issues uploading the cache from the Windows
runner.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/344>

cerbero ci: Try to fix deps build on the gstreamer namespace

Can't ln twice: it does a cp on MSYS.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/344>

cerbero ci: Don't expand the ssh private key

Because of set -x we were printing the key into the CI logs:
https://gitlab.freedesktop.org/gstreamer/cerbero/-/jobs/4572836#L797

Don't ever expand the variable in shell.

Switch MSVC job to manual till we can upload deps cache

The deps cache job is failing:

https://gitlab.freedesktop.org/gstreamer/cerbero/-/jobs/4568410

Because of which MRs in other repos are unable to download the cache
and are building everything from scratch, which is inflating CI times
to 2 hours:

https://gitlab.freedesktop.org/marian/gst-plugins-bad/-/jobs/4567025

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/343>

citemplate: post-merge fix for url path

switch it so it looks at the stable branch for the cerbero_setup
script.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/342>

citemplate: add initial cerbero msvc builds

This commit adds the last bits needed to have a working
CI job of cerbero using mingw and msvc17 toolchain.

It adds a new stage to the docker image that mirrors
the setup of the cerbero fedora docker build, and
tweaks the cerbero_setup script run by jobs with
a couple windows specific fixes.

Close #39

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/334>

gitlab/cerbero_setup.sh: refactor some tests to if/else statments

and replace the ccache check

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/329>

ci_template: move the cerbero scripts from yaml to a new file

Its hard to manage ever growing bash scripts in yaml, and
its even harder to run them locally to reproduce the environment.

This is essentially a copy-paste of the scripts, to make review
easier. We can refactor later.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/329>

citemplate: workaround stale subproject cache

The revision of the wrap for pygobject was switched recently [1]

[1]: https://gitlab.freedesktop.org/gstreamer/gst-build/-/merge_requests/189

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/339>

docker/fedora: install more debug symbols

These are needed for the webrtcbin tests

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/339>

docker/windows: move the git user config outside the script

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/333>

docker/windows: tweak installation of git

Make sure we set autocrlf to false, which is needed by cerbero.
Additionally remove useless for the container integrations with
the shell.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/333>

cerbero/fedora: install which into the image

We used to get this as transient dependency it seems,
which broke rebuilds of the img once w/e pkg was
depending on it, stopped.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/338>

citemplate: update the buildah bootstrap image

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/338>

ci_template: correctly spell the global var

Close #83

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/337>

citemplate: rework gitlab rules

Rework rules of jobs to prever duplicate pipelines.

https://docs.gitlab.com/ce/ci/yaml/README.html#prevent-duplicate-pipelines

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/331>

ci_template: remove rules from the docker build

We can run the jobs always automatically since, most of the
time they will be copying/reffing the existance image in the
registry.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/331>

citemplate: Allow spaces in filenames when indenting

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/328>

citemplate: add support for .indentignore file to indent job

See https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1465

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/328>

citemplate: skip integration testsuites for gstreamer-sharp

Close #80

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/326>

citemplate: make it so docker builds only run for detached pipelines

Currently, if you have a MR open, there 2 pipelines being
triggered. One normal, and one detached.

Previously, if you were to rebuild an image, the jobs of the
docker build stage would be executed concurrently, race
and end up both rebuilding the image.

Make them manual for normal pipelines to avoid such occurrence
and waste of resources.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/320>

citemplate: properly pin the image of the docs job

we don't need the image to be copied or rebuilt, as
its currently pinned shortly and won't change anytime soon.

ammends dc486667426d0d31284e25001cfece45879595a8 !324

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/325>

citemplate: revert the docs job to the previous image build

The update to f31 from !271 triggered an error in hotdoc it seems,
so rollback for now till we figure it out.

https://gitlab.freedesktop.org/gdesmott/gst-plugins-base/-/jobs/3764215

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/324>

docker/fedora: update base to fedora 31

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/271>

gitlab: Support android tarballs compressed with xz

Needed for
https://gitlab.freedesktop.org/gstreamer/cerbero/-/merge_requests/540.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/322>

gitlab: update hotdoc

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/321>

docker/fedora: add gtest to get openh264 to build again

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/315>

gst-build: only enable werror for gst recipes

It may throws various warning that are treated as errors for other
repositories

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/171>

citemplate: use the default keyword for our global policy

It was introduced in a recentish release along with pipelines
for merge requests, but it required the use of rules.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/318>

citemplate: avoid the need to upgrade buildah in docker build

We only need the newer version from the image, to support
the --arch arg, but we don't really use it yet so we
could live without it.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/318>

citemplate: run check in gst-examples but not integration tests

gst-example contains tests for check but not integrations suite

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/318>

citemplate: run the docs job in more modules

Needed to catch regressions in the docs cache files.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/318>

citemplate: slightly improve logging of docker build jobs

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/318>

ci: use gst-indent from docker image

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/318>

gitlab: Update hotdoc

ci_template: update hotdoc

msys2: Fix pacman update

Match the official steps by MSYS2 upstream for updating on CI:

https://github.com/msys2/setup-msys2/blob/master/main.js#L98

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/317>

citemplate: check if the gitlab registry is enabled on the fork

If its not CI_REGISTRY_IMAGE will be null and break the job.
Instead paste a helpful message with the documentation on how
to enable the registry.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/316>

citemplate: remove tag restriction for docker builds jobs

There isn't anything particular that needs to be on the gstreamer
runners, and the other shared runners should be able to handle
them fine.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/314>

docker: move gst-indent script into docker image

This script is now very stable, so downloading it everytime is no longer useful.
It can also helps avoid network errors when running ci jobs.

Fix #70

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/306>

citemplate: also check the forked registry for image builds

In case you are developing a set of changes in a module, in
conjunction with a branch in gst-ci, you will end up with
a template with a different tag than the upstream repo, which
will be refferencing your gst-ci forked registry.

But that image won't existin in the namespace the
module would be running at, so we need to copy it from there.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/308>

citemplate: use the fd.o pre existing buildah image to build containers

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/308>

ci_template: merge docker builds into the normal pipeline

Port the build docker jobs to the template and integrate it into
the pipeline. Then change the image uris to the new system,
and the user forked registries.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/308>

.gitlab-ci.yml: kill local jobs

The idea behind local jobs was that you would have jobs that
share the same setup as the citemplate ones but would always
be pointing to your forked registry with your custom build of
the image, since the citemplate hardcoded the image it was
running against.

With the changes introduced in the previous commit
we now mirror the setup from freedesktop/ci-templates and the idea
is that jobs always run from the registry in your fork. If the
image sha/id matches the one from the upstream registry, its copied
over else a new one is build, pushed and tested.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/308>

.gitlab-ci.yml: adapt the docker build jobs to be more like citemplates

This is the inital step towards migrating our docker images setup
to something closer and eventually freedesktop/citemplates [1]

The idea is that jobs always run from the registry in your fork. If the
image sha/id matches the one from the upstream registry, its copied
over else a new one is build, pushed and tested.

Only change the fedora job for now while testing.

[1]: https://gitlab.freedesktop.org/freedesktop/ci-templates

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/308>

image_builds: simplify the tags

We can use docker labels to pass the metadata we want
and make the tag simpoler.

also small fixup, make it so buildah it uses chroot isolation
and update the base image

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/308>

docker/fedora: update rust toolchain to 1.44

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/308>

docker/fedora: update meson version to 0.54.3

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/308>

gitlab: Update hotdoc

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/312>

gitlab: Update hotdoc to 0.12.2

Adding Since markers check

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/310>

ci: Update to hotdoc

citemplate: upate the cerbero image

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/307>

CI: Combine deps and build for cerbero builds

This change combine the deps and the build step when running cerbero CI in
cerbero repository itself. This removes avoidable usage of large artifacts.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/303>

docker/windows: update msys snapshot

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-ci/-/merge_requests/297>

gitlab: Enforce documentation cache updates