Upgrade black version (#7089)

stdlib/ctypes/__init__.pyi

@@ -47,6 +47,7 @@ class CDLL:
         def __init__(
             self, name: str | None, mode: int = ..., handle: int | None = ..., use_errno: bool = ..., use_last_error: bool = ...
         ) -> None: ...
+
     def __getattr__(self, name: str) -> _NamedFuncPointer: ...
     def __getitem__(self, name: str) -> _NamedFuncPointer: ...