[gnome-shell] gvc: Update submodule to up-to-date version

[Florian Müllner <fmuellner src gnome org>]

commit 7127fb1fa1801cb6fb27480898dac99a467dd2a1
Author: Robert Mader <robert mader posteo de>
Date:   Thu Feb 28 21:51:41 2019 +0100

    gvc: Update submodule to up-to-date version
    
    This frees us from all remaining '‘g_type_class_add_private’ is deprecated'
    warnings.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/427

 subprojects/gvc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/subprojects/gvc b/subprojects/gvc
index 6a0ac9ba6..0e1b4bdaf 160000
--- a/subprojects/gvc
+++ b/subprojects/gvc
@@ -1 +1 @@
-Subproject commit 6a0ac9ba69f84d763f286c5741b57ff8d87c1f45
+Subproject commit 0e1b4bdafc364d5b62ffd14847e9e6ecfefbf2c9