ci: install a more recent version of Wine in the test-vk image

ci: install a more recent version of Wine in the test-vk image

Debian's Wine 5.0 has shown some problems when running Vulkan tests in
the past. Let's install the stable version provided by WineHQ (7.0 at
this time).

v2:
  - Remove OBS repository for Wine since it is unused (previously, it
    was providing libfaudio0) (Daniel).

v3:
  - Add WineHQ's repository GPG key (Michel).

Signed-off-by: Andres Gomez <agomez@igalia.com>
Reviewed-by: Martin Roukala <martin.roukala@mupuf.org> [v2]
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17184>