[vala] (10 commits) ...gtk+-3.0: Update to 3.22.30+21fddc39

[Rico Tzschichholz <ricotz src gnome org>]

Summary of changes:

  d2d2e18... vala: Move creation of reference field from parser into pro (*)
  6780a0f... vala: Accessors of abstract properties cannot have bodies (*)
  9adb863... codegen: *Drop* support for non-auto property initializer i (*)
  0d396f7... vala: Report an error when initializing non-auto properties (*)
  8b136f6... glib-2.0: Add TimeZone.offset() constructor (*)
  fea923b... girparser: Deal with missing "name" attribute by falling ba (*)
  f935ba4... webkit2gtk-4.0: Update to 2.21.1 (*)
  212cd10... gstreamer: Update from 1.15+ git master (*)
  9a3c409... gtk+-4.0: Update to 3.93.0+7a09cd4c (*)
  d720fdf... gtk+-3.0: Update to 3.22.30+21fddc39 (*)

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