[gimp] (21 commits) Non-fast-forward update to branch wip/Jehan/CI-Windows

[Jehan <jehanp src gnome org>]

The branch 'wip/Jehan/CI-Windows' 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:

  9f65b74... build, gitlab-ci: add a script to cross-build GIMP with Git
  695126c... libgimp: fix meson build.
  7c7b24b... gitlab-ci: run gdk-pixbuf-query-loaders.

Commits added to the branch:

  5cccad9... plug-ins: move around and clean up some code in file-webp (*)
  2e18a91... plug-ins: saner argument name in blinds (*)
  0428069... app: fix offset handling in spiral gradients (*)
  1b48c68... plug-ins: port file-webp to GimpProcedureConfig (*)
  2a75317... app: update image bounding box when moving layer inside/out (*)
  a6ebbfe... app: avoid updating image bounding box multiple times when  (*)
  2473185... app: add missing change to last commit (*)
  68c3574... plug-ins: clean up file-bmp-save in preparation for GimpPro (*)
  b6b77fe... plug-ins: port file-bmp to GimpProcedureConfig and propwidg (*)
  e1a9b92... libgimp: remove underscores from the procedure conifig load (*)
  711aa71... Updated Slovenian translation (*)
  8bb1c6e... Updated Slovenian translation (*)
  67b3d78... Updated Slovenian translation (*)
  49cd319... Update Polish translation (*)
  88c6f82... Issue #3994 - Artifacts when committing half-cached filters (*)
  de03dbe... Update Spanish translation (*)
  b10bdf8... plug-ins: prepare file-dds for GimpProcedureConfig porting (*)
  d3cfae2... plug-ins: same cleanup in the DDS load dialog (*)
  e17efb7... build, gitlab-ci: add a script to cross-build GIMP with Git
  f87ae8c... libgimp: fix meson build.
  203509f... gitlab-ci: run gdk-pixbuf-query-loaders.

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