[mutter] (15 commits) Non-fast-forward update to branch wip/carlosg/app-grid-gestures

[Marge Bot <marge-bot src gnome org>]

The branch 'wip/carlosg/app-grid-gestures' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  df91fd1... clutter: Update ClutterGestureAction point position before 
  34e3ffa... clutter: Ensure to reset touchpoints when disabling action

Commits added to the branch:

  374a811... Update Serbian translation (*)
  561ef38... Update Galician translation (*)
  21a09fb... Tag release 40.0 (*)
  4a5b983... Post-release version bump (*)
  9e36ff2... Update British English translation (*)
  3b70288... Update Vietnamese translation (*)
  9e10d2f... cogl: Drop "volatile" from static GTypes in manual registra (*)
  bc1026d... clutter: Drop "volatile" from static GTypes in manual regis (*)
  dc94819... core: Drop "volatile" from static GTypes in manual registra (*)
  dc74d4d... Updated Czech translation (*)
  3555f65... wayland-dma-buf: Add support for DRM_FORMAT_ABGR2101010 (*)
  4bee25d... wayland: Cancel selection data sources that are set while u (*)
  0e97c05... clutter/actor: Always use allocation size for picking (*)
  b0a0be3... clutter: Update ClutterGestureAction point position before 
  83ed2af... clutter: Ensure to reset touchpoints when disabling action

(*) This commit already existed in another branch; no separate mail sent