temp/gtk4.0: upgrade to 4.6.5

Upstream MR: https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/35014

Pretty uncontroversial changes:

Overview of Changes in 4.6.5, 27-05-2022
========================================

* GtkFileChooser:
 - Fix pasting text into the name field

* GtkText:
 - Remove an assertion that is sometimes hit

* Wayland:
 - Ensure that our cursor surfaces don't violate
   protocol constraints

* Accssibility:
 - Fix a problem in the accessibility tree