[godot] Fixes #2371, crash on window resize
This is due to a Godot 4.1.1 bug in combination with the latest MoltenVK release. See https://github.com/godotengine/godot/pull/81219#issuecomment-1706609032. We are hardcoding the SDK version for now, until the fix has been merged and released in Godot 4.1.x.