Bump mypy (and a few other test dependencies) (#11196)

stdlib/asyncore.pyi

@@ -83,6 +83,7 @@ if sys.platform != "win32":
         def write(self, data: bytes, flags: int = ...) -> int: ...
         def close(self) -> None: ...
         def fileno(self) -> int: ...
+        def __del__(self) -> None: ...
 
     class file_dispatcher(dispatcher):
         def __init__(self, fd: FileDescriptorLike, map: _MapType | None = None) -> None: ...