[PRQ#38059] Merge Request for gst-libav-git

SolarAquarion [1] filed a request to merge gst-libav-git [2] into gstreamer-git [3]: i'm building a monorepo split package [1] https://aur.archlinux.org/account/SolarAquarion/ [2] https://aur.archlinux.org/pkgbase/gst-libav-git/ [3] https://aur.archlinux.org/pkgbase/gstreamer-git/