[gimp] (24 commits) Non-fast-forward update to branch wip/nielsdg/string-array-to-strv

[Jehan <jehanp src gnome org>]

The branch 'wip/nielsdg/string-array-to-strv' 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:

  d036e54... Remove GimpStringArray in favor of GStrv
  667eb66... pdbgen
  cd7293b... plug-ins: fixes after rebasing !389.

Commits added to the branch:

  c112a55... libgimp*, plug-ins: fix some warnings (*)
  8b39b92... Update Spanish translation (*)
  8e44825... flatpak: Fix build (*)
  2842a8e... flatpak: Bump versions of some modules (*)
  95754f0... flatpak: Add gvfsd permission for gvfs (*)
  551cc6a... flatpak: Remove meson build (*)
  68cf9d8... flatpak: Remove -Dlibdir=lib configure option (*)
  d468722... flatpak: Build graphviz as GEGL submodule (*)
  94ed45d... flatpak: Add patch to Cairo preventing subpixel font render (*)
  1228d89... flatpak: Add maxflow dependency and build with workshop (*)
  61389ad... flatpak: Use exact version of GEGL (0.4.30) (*)
  83f5698... ci: Enable nightly flatpak builds (*)
  434ef40... gitlab-ci: create a GIMP_CI_FLATPAK Gitlab variable to trig (*)
  e6d3e89... gitlab-ci: remove "when: always" in flatpak job. (*)
  f2c73f2... gitlab-ci: fix (again!) the gitlab-ci. (*)
  eeb7b63... gitlab-ci: store flatpak-build output into a log file. (*)
  2503453... Revert "flatpak: Use exact version of GEGL (0.4.30)" (*)
  039be5d... build: sync with development flatpak. (*)
  512fc24... add msys support (*)
  85dd69d... gitlab-ci: expire the Windows installer artifact after a we (*)
  20fa78d... gitlab-ci: add support for flatpak and Windows installer jo (*)
  13bae55... Remove GimpStringArray in favor of GStrv
  769961b... pdbgen
  9bfaf46... plug-ins: fixes after rebasing !389.

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