[empathy] Bump GTK+ requirement to 2.91.1

[Danielle Madeley <daniellem src gnome org>]

commit 873f14fac716544d076fea1776f2b44c9dc233f6
Author: Danielle Madeley <danielle madeley collabora co uk>
Date:   Mon Oct 18 11:07:07 2010 +1100

    Bump GTK+ requirement to 2.91.1

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 21fb159..ff20e9b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -35,7 +35,7 @@ FOLKS_REQUIRED=0.3.1
 GCONF_REQUIRED=1.2.0
 GLIB_REQUIRED=2.25.9
 GNUTLS_REQUIRED=2.8.5
-GTK_REQUIRED=2.91.0
+GTK_REQUIRED=2.91.1
 KEYRING_REQUIRED=2.26.0
 LIBCANBERRA_GTK_REQUIRED=0.25
 LIBNOTIFY_REQUIRED=0.5.1