[gvfs] Update NEWS for 1.39.92 release

[Ondrej Holy <oholy src gnome org>]

commit 9d0649674db1ea57392894995ebd5c0ba5bcb856
Author: Ondrej Holy <oholy redhat com>
Date:   Mon Mar 4 13:37:28 2019 +0100

    Update NEWS for 1.39.92 release

 NEWS | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/NEWS b/NEWS
index bf249dd7..cc2e51c9 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,9 @@
+Major changes in 1.39.92
+========================
+* client: Fix mount info cache invalidation
+* Several smaller bugfixes
+* Translation updates
+
 Major changes in 1.39.91
 ========================
 * smb: Do not show password prompt when using winbind ccache