Revert to ci template from git master
Revert to ci template from git master

Part-of: <https://gitlab.freedesktop.org/gstreamer/cerbero/-/merge_requests/491>

nirbheek/cerbero,GStreamer/cerbero,GStreamer/cerbero,GStreamer/cerbero,GStreamer/cerbero,nirbheek/cerbero,nirbheek/cerbero,nirbheek/cerbero,GStreamer/cerbero