[atk] (12 commits) Non-fast-forward update to branch ebassi/atk-2-38

[Emmanuele Bassi <ebassi src gnome org>]

The branch 'ebassi/atk-2-38' 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:

  b65e43e... Drop volatile from the enumeration type registration
  68adf85... ci: Use debian:stable
  e36b1b1... ci: Use fedora:latest
  21596c8... Bump up the required Meson version
  a26c2a8... ci: Use the newer container images
  ebebb69... ci: Install Meson globally
  46a02a4... Bump up to Meson 0.56.2
  edbb89d... ci: Use all the extra Meson configuration flags
  1063eea... Do not use deprecated Meson API

Commits added to the branch:

  d123a66... atk_value_get_value_and_text: cope with text being NULL (*)
  337eeb1... Merge branch 'get_value_and_text_text_null' into 'master' (*)
  ac33caf... Drop volatile from the enumeration type registration
  ea444de... ci: Use debian:stable
  3162abd... ci: Use fedora:latest
  08395da... Bump up the required Meson version
  43c267d... ci: Use the newer container images
  d1768c5... ci: Install Meson globally
  802165e... Bump up to Meson 0.56.2
  2178313... ci: Use all the extra Meson configuration flags
  6cb2486... Do not use deprecated Meson API
  0f214fa... Release ATK 2.38.0 (stable)

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