[gnome-calendar] Post-release version bump

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit c37a9ef9ffe71a4d94fca3dc91d5e91ce5ccecb5
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Fri Mar 12 11:13:08 2021 -0300

    Post-release version bump

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index 6f996136..0fc030f2 100644
--- a/meson.build
+++ b/meson.build
@@ -1,7 +1,7 @@
 project(
   'gnome-calendar',
                'c',
-           version: '40.rc',
+           version: '40.0',
            license: 'GPL3+',
      meson_version: '>= 0.53.0'
 )