[gimp] (7 commits) Non-fast-forward update to branch wip/Jehan/fixing-release-gimp-2-99-10-win

[Jehan <jehanp src gnome org>]

The branch 'wip/Jehan/fixing-release-gimp-2-99-10-win' 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:

  84809e2... build: package the AppStream file into the Windows installe
  db90964... Revert "configure.ac, meson.build: post-release version bum

Commits added to the branch:

  aaafa86... devel-docs: add some information about theming. (*)
  eb9b936... app: let's also check the appstream in the legacy location  (*)
  140ce80... devel-docs: typo fix. (*)
  271d6a0... build: fix libjxl compilation (*)
  82af34e... NEWS: update translations for GIMP 2.99.10. (*)
  cd3d8fb... build: package the AppStream file into the Windows installe
  714d035... Revert "configure.ac, meson.build: post-release version bum

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