[gtk] (20 commits) Non-fast-forward update to branch wip/carlosg/for-master

[Carlos Garnacho <carlosg src gnome org>]

The branch 'wip/carlosg/for-master' 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:

  de29513... gtkpopover: Revert focus to parent on hide()

Commits added to the branch:

  fd63193... transition demo: Make buttons symbolic (*)
  5829bc7... Use correct child widget when measuring (*)
  fd1e8af... meson: Change introspection option to yielding feature (*)
  dfd16e3... ci: Use a newer meson in images (*)
  517a840... ci: Use the v24 images (*)
  7780b89... ci: Really enable werror (*)
  21c8bc2... build: Require meson 0.54 (*)
  b0da095... gsk: Fix compiler warnings (*)
  72eb89e... gtk-demo: Add the shader paintable sources (*)
  b936419... ci: Remove --fatal-meson-warnings (*)
  103080c... build: Remove an unneeded version check (*)
  91c8f6b... build: Try to fix docs+subprojects (*)
  9bac129... ci: Try to get everything building again (*)
  6e7c0ce... ci: Give up on sysprof for now (*)
  028cd1e... Revert "Fix the build with cups < 2.3" (*)
  9601863... CI: Enable introspection again for the Windows build (*)
  6de7022... Merge branch 'ci-win32-introspection-enabled' into 'master' (*)
  cbe3de9... Merge branch 'master' into 'matthiasc/for-master' (*)
  ce29545... Merge branch 'matthiasc/for-master' into 'master' (*)
  a41d072... gtkpopover: Revert focus to parent on hide()

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