[gdm] NEWS: update for release

[Ray Strode <halfline src gnome org>]

commit 841a21798a374443b596db6309e1cf10ba6128f0
Author: Ray Strode <rstrode redhat com>
Date:   Mon Aug 13 10:54:07 2018 -0400

    NEWS: update for release

 NEWS | 8 ++++++++
 1 file changed, 8 insertions(+)
---
diff --git a/NEWS b/NEWS
index 603f8c98..7b275192 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,11 @@
+===============
+Version 3.29.91
+===============
+- CVE-2018-14424 - double free fix
+- follow up fixes dealing with login screen reaping form last release
+- add more debug logging
+- Translation updates
+
 ===============
 Version 3.29.90
 ===============