[libadwaita] (2 commits) Non-fast-forward update to branch wip/exalm/12beta

[Alexander Mikhaylenko <alexm src gnome org>]

The branch 'wip/exalm/12beta' 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:

  66347f6... Post-release version bump to 1.2.beta

Commits added to the branch:

  9150f40... Release 1.2.alpha (*)
  d943a3d... Post-release version bump to 1.2.beta

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