[dconf-editor] Bump GTK+ and DConf required versions.

[Arnaud Bonatti <arnaudb src gnome org>]

commit 71b390366a373924f15c146b5644fb1428d50e71
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Mon Jun 20 06:55:47 2016 +0200

    Bump GTK+ and DConf required versions.

 configure.ac |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index b1a34ec..1e18edc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -30,9 +30,9 @@ GLIB_GSETTINGS
 APPSTREAM_XML
 
 # Dependencies
-DCONF_REQUIRED=0.23.2
+DCONF_REQUIRED=0.25.1
 GLIB_REQUIRED=2.46.0
-GTK_REQUIRED=3.19.5
+GTK_REQUIRED=3.21.3
 
 PKG_CHECK_MODULES(DCONF_EDITOR, [
   glib-2.0 >= $GLIB_REQUIRED