Use PEP 585 syntax wherever possible (#6717)

stdlib/urllib/request.pyi

@@ -4,7 +4,7 @@ from _typeshed import StrOrBytesPath
 from email.message import Message
 from http.client import HTTPMessage, HTTPResponse, _HTTPConnectionProtocol
 from http.cookiejar import CookieJar
-from typing import IO, Any, Callable, ClassVar, Mapping, NoReturn, Pattern, Sequence, Tuple, TypeVar, overload
+from typing import IO, Any, Callable, ClassVar, Mapping, NoReturn, Pattern, Sequence, TypeVar, overload
 from urllib.error import HTTPError
 from urllib.response import addclosehook, addinfourl
 
@@ -196,9 +196,9 @@ class HTTPSHandler(AbstractHTTPHandler):
     def https_request(self, request: Request) -> Request: ...  # undocumented
 
 class FileHandler(BaseHandler):
-    names: ClassVar[Tuple[str, ...] | None]  # undocumented
+    names: ClassVar[tuple[str, ...] | None]  # undocumented
     def file_open(self, req: Request) -> addinfourl: ...
-    def get_names(self) -> Tuple[str, ...]: ...  # undocumented
+    def get_names(self) -> tuple[str, ...]: ...  # undocumented
     def open_local_file(self, req: Request) -> addinfourl: ...  # undocumented
 
 class DataHandler(BaseHandler):