[gedit] meson: match version number used in configure.ac

[Jeremy Bicha <jbicha src gnome org>]

commit 1b2d6d58c5a8ae72455c28b8012120e22b0d597d
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Sat Jan 12 10:58:10 2019 -0500

    meson: match version number used in configure.ac

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index c04ba6185..0327dc920 100644
--- a/meson.build
+++ b/meson.build
@@ -1,6 +1,6 @@
 project(
   'gedit', 'c',
-  version: '3.31.1',
+  version: '3.31.3',
   meson_version: '>=0.46.0',
   license: 'GPL2'
 )