[mutter] Post-release version bump (again)

[Florian Müllner <fmuellner src gnome org>]

commit 898aa25c689eaf48e4a253ad3ce0a4f45c99a326
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Jan 14 17:57:01 2021 +0100

    Post-release version bump (again)

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index 552e68e53c..5b4be80817 100644
--- a/meson.build
+++ b/meson.build
@@ -1,5 +1,5 @@
 project('mutter', 'c',
-  version: '40.alpha.1.1',
+  version: '40.beta',
   meson_version: '>= 0.51.0',
   license: 'GPLv2+'
 )