build: Update libgnome-volume-control revision (again)

The previous update caused duplicated device entries, pull in the
fix.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/4063>

diff --git a/subprojects/gvc.wrap b/subprojects/gvc.wrap
index ab38b71ba126b7ffd30314480897ab8a11eb61a5..b5c2a5f16edadfd4cd18c9656c67b10de47f7cd6 100644 (file)
--- a/subprojects/gvc.wrap
+++ b/subprojects/gvc.wrap
@@ -2,5 +2,5 @@
 directory=gvc
 url=https://gitlab.gnome.org/GNOME/libgnome-volume-control.git
 push-url=ssh://git@gitlab.gnome.org:GNOME/libgnome-volume-control.git
-revision=47c47a423ff2f55bb038d92517e4782cf051496a
+revision=664eba4c054ecc4a140f0ef01ae9297422b71fdc
 depth=1