Log Message:
gtk4: updated to 4.16.12

Overview of Changes in 4.16.12, 03-01-2025

Switch to the new release process

Overview of Changes in 4.16.8, 03-01-2025

* GtkFileChooser:
 - Fix a focus problem with the server entry

* GtkEmojiChooser:
 - Update to CLDR 46 / Unicode 16

* GtkAboutDialog:
 - Small improvements

* Wayland:
 - Fix some Vulkan sizing corner cases
 - Fix problems with rotated, offloaded images
 - Fix a few crashes

* Demos:
 - Don't create extra windows for D-Bus activation