Removal of now defunct "master" branches in git

[Tim-Philipp Müller]

Hi,

This is a pre-notification about the impending removal of the now-
defunct "master" branches in our git repositories.

Now that GStreamer development has switched over to the mono repository
in the "main" branch of the gstreamer module [*] and the "main" branch
of the cerbero module, the "master" branches of these module are
defunct and stuck on the 1.19.2 tag/release preceding the mono
repository migration. The same is true for the other modules.

Anyone who may still have workflows built on top of these master
branches should either migrate them to the stable 1.20 branch of the
mono repository or switch to the 1.19.2 tag in the existing
repositories.

The intention is to remove the "master" branches in the near future,
possibly as soon as next week.

Cheers
 Tim

[*]
https://gstreamer.freedesktop.org/documentation/frequently-asked-questions/mono-repository.html