[gnome-control-center] subprojects: revert accidental libgvc downgrade

[Felipe Borges <felipeborges src gnome org>]

commit 7e08d6874f326cc79c992b11ed73d06ddebd3f7f
Author: Pauli Virtanen <pav iki fi>
Date:   Tue Jul 5 14:35:16 2022 +0300

    subprojects: revert accidental libgvc downgrade
    
    Re-do the libgvc version upgrade from 8c84b9f0d378 ("subprojects: Update
    libgvc"), which was accidentally reverted in 95de2049c7fd ("shell:
    Initialise locale early") without comment.

 subprojects/gvc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/subprojects/gvc b/subprojects/gvc
index 7a621180b..8e7a5a4c3 160000
--- a/subprojects/gvc
+++ b/subprojects/gvc
@@ -1 +1 @@
-Subproject commit 7a621180b46421e356b33972e3446775a504139c
+Subproject commit 8e7a5a4c3e51007ce6579292642517e3d3eb9c50