[libadwaita] (12 commits) ...tab-box: Use g_clear_list()

[Alexander Mikhaylenko <alexm src gnome org>]

Summary of changes:

  ccf8a62... meson: Require glib 2.66 (*)
  0d79315... Bump GTK and GLib versions in adwaita.h (*)
  c413917... carousel: Clean up scroll timer (*)
  ac428d0... demo: Use g_file_peek_path() (*)
  2821a10... swipe-tracker: Make swipeable a weak ref (*)
  4f318f5... animation: Don't leak widget and target (*)
  4e7ceb9... carousel: Unparent children in dispose() (*)
  08a1827... leaflet: Prevent an infinite loop in dispose() (*)
  d1da4bd... shadow-helper: Don't ref widget (*)
  466509f... tests: Use g_assert_finalize_object() across the board (*)
  3d7bad5... carousel: Test child removal on dispose (*)
  be25987... tab-box: Use g_clear_list() (*)

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