Use PEP 585 syntax wherever possible (#6717)

stdlib/http/cookiejar.pyi

@@ -1,7 +1,7 @@
 import sys
 from _typeshed import StrPath
 from http.client import HTTPResponse
-from typing import ClassVar, Iterable, Iterator, Pattern, Sequence, Tuple, TypeVar, overload
+from typing import ClassVar, Iterable, Iterator, Pattern, Sequence, TypeVar, overload
 from urllib.request import Request
 
 _T = TypeVar("_T")
@@ -102,10 +102,10 @@ class DefaultCookiePolicy(CookiePolicy):
             strict_ns_set_initial_dollar: bool = ...,
             strict_ns_set_path: bool = ...,
         ) -> None: ...
-    def blocked_domains(self) -> Tuple[str, ...]: ...
+    def blocked_domains(self) -> tuple[str, ...]: ...
     def set_blocked_domains(self, blocked_domains: Sequence[str]) -> None: ...
     def is_blocked(self, domain: str) -> bool: ...
-    def allowed_domains(self) -> Tuple[str, ...] | None: ...
+    def allowed_domains(self) -> tuple[str, ...] | None: ...
     def set_allowed_domains(self, allowed_domains: Sequence[str] | None) -> None: ...
     def is_not_allowed(self, domain: str) -> bool: ...
     def set_ok_version(self, cookie: Cookie, request: Request) -> bool: ...  # undocumented