[gnome-panel] bump GTK+ required version

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 351771e274f0b0f7c31548cfe19705e9f42bb42c
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sat Jan 9 09:35:42 2016 +0200

    bump GTK+ required version

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index eb97374..bbdaab2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -103,7 +103,7 @@ LIBGNOME_DESKTOP_REQUIRED=2.91.0
 GDK_PIXBUF_REQUIRED=2.25.2
 PANGO_REQUIRED=1.15.4
 GLIB_REQUIRED=2.45.3
-GTK_REQUIRED=3.19.5
+GTK_REQUIRED=3.19.6
 LIBWNCK_REQUIRED=3.4.6
 LIBGNOME_MENU_REQUIRED=3.7.90
 LIBECAL_REQUIRED=3.5.3