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

[Alexander Mikhaylenko <alexm src gnome org>]

The branch 'wip/exalm/tab-bg' 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:

  96eb230... tab-box: Remove bg from a single expanded tab

Commits added to the branch:

  68bf0fb... ci: Add aarch64 flatpak builds (*)
  4d06461... tab-box: Remove bg from a single expanded tab

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