[gnome-shell-extensions] Update sass submodule

[Florian Müllner <fmuellner src gnome org>]

commit 47c2834ffadb5f21c0221c11c031174c7e9d0426
Author: Florian Müllner <fmuellner gnome org>
Date:   Sun Sep 4 15:24:50 2022 +0200

    Update sass submodule

 data/gnome-shell-sass | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/data/gnome-shell-sass b/data/gnome-shell-sass
index 0f09f2a..78781f0 160000
--- a/data/gnome-shell-sass
+++ b/data/gnome-shell-sass
@@ -1 +1 @@
-Subproject commit 0f09f2abc798e2878d95199d44a1d4464733a156
+Subproject commit 78781f0a487a575efc4a54562903accfc47f5f9d