CI: Update static checks to black 23.3.0

And apply it to the codebase, removing empty lines at the start of blocks.

platform/uwp/detect.py

@@ -21,7 +21,6 @@ def can_build():
     if os.name == "nt":
         # building natively on windows!
         if os.getenv("VSINSTALLDIR"):
-
             if os.getenv("ANGLE_SRC_PATH") is None:
                 return False