Update typing_extensions imports in stdlib (#11244)

Co-authored-by: AlexWaygood <alex.waygood@gmail.com>

stdlib/ftplib.pyi

@@ -4,8 +4,8 @@ from collections.abc import Callable, Iterable, Iterator
 from socket import socket
 from ssl import SSLContext
 from types import TracebackType
-from typing import Any, TextIO
-from typing_extensions import Literal, Self
+from typing import Any, Literal, TextIO
+from typing_extensions import Self
 
 __all__ = ["FTP", "error_reply", "error_temp", "error_perm", "error_proto", "all_errors", "FTP_TLS"]