[gnome-control-center] subprojects: Bump libhandy to fix i18n

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 849362f33974388a6ce0535155ac8b843f976eb5
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Fri Mar 1 17:13:18 2019 +0100

    subprojects: Bump libhandy to fix i18n

 subprojects/libhandy | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/subprojects/libhandy b/subprojects/libhandy
index 3721b490b..96c040cac 160000
--- a/subprojects/libhandy
+++ b/subprojects/libhandy
@@ -1 +1 @@
-Subproject commit 3721b490b6aacd0a8c755bf445b0a91ee9c347bc
+Subproject commit 96c040cacdf3ae1fcef37a003199ed8b61c0fba7