overrides: Update for Gtk-4.0
overrides: Update for Gtk-4.0

Skip things which are gone since 4.0.
This only fixes importing and doesn't add any tests for now.

https://bugzilla.gnome.org/show_bug.cgi?id=773315

pexip/pygobject,pexip/pygobject,GNOME/pygobject,GNOME/pygobject,pexip/pygobject,GNOME/pygobject