travis: Update build environments
authorChris Dickens <christopher.a.dickens@gmail.com>
Mon, 9 Nov 2020 19:01:10 +0000 (11:01 -0800)
committerChris Dickens <christopher.a.dickens@gmail.com>
Mon, 9 Nov 2020 19:01:10 +0000 (11:01 -0800)
commitab5dcf4f44b344500adfaf0a676eb0649fdb5d34
treeaa33184c9a91372b2bf4916d59934a6d4a5c49fd
parenta016a082a8143409006d954112b5130bc7e9449c
travis: Update build environments

Add Ubuntu's Focal distribution to get the latest Linux toolchain.

Add Xcode 12.2 to get the latest MacOS toolchain.

Remove Xcode 7.3 as it is now obsolete and will not successfully build.

Signed-off-by: Chris Dickens <christopher.a.dickens@gmail.com>
.travis.yml
libusb/version_nano.h