[gnome-flashback] bump gsettings-desktop-schemas required version

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 144b1349b435e550a7f8d05af113e3c2d9854b7e
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Wed Jun 22 08:43:04 2016 +0300

    bump gsettings-desktop-schemas required version

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 8b45e42..54b7c03 100644
--- a/configure.ac
+++ b/configure.ac
@@ -110,7 +110,7 @@ GTK_REQUIRED=3.19.5
 LIBGNOME_DESKTOP_REQUIRED=3.12.0
 CANBERRA_REQUIRED=0.13
 GLIB_REQUIRED=2.44.0
-GSETTINGS_DESKTOP_SCHEMAS_REQUIRED=3.21.2
+GSETTINGS_DESKTOP_SCHEMAS_REQUIRED=3.21.3
 POLKIT_AGENT_REQUIRED=0.97
 POLKIT_GOBJECT_REQUIRED=0.97
 IBUS_REQUIRED=1.5.2