subprojects: Update libgvc

This update is necessary to add support for recent UCM related changes
in ALSA and PulseAudio.

See https://gitlab.gnome.org/GNOME/libgnome-volume-control/-/merge_requests/10
This commit is contained in:
Bastien Nocera
2020-09-21 11:08:16 +02:00
committed by Robert Ancell
parent 02d4834c2c
commit 5867830e5f