Update to Godot 3.4.3

[Calinou]

https://godotengine.org/article/maintenance-release-godot-3-4-3

@abarichello That reminds me, is there a way I could perform those updates on Docker Hub?

[abarichello]

I added you as a contributor but i'm not sure if that gives you push permissions, if that doesnt work the only option i see is to create a new repository

[realkotob]

I do not think this issue is relevant anymore, Godot 4 is out.