🎉 godot-upgrade: 4.0 RC 6 -> stable 🎉

[f8122dac91]

Changelog:

• current: https://godotengine.org/article/release-candidate-godot-4-0-rc-6/
• next: https://godotengine.org/article/godot-4-0-sets-sail/

Notable changes:

-

CI Docker Image:

• f8122dac91/godot-4.0-ci-exporter:stable