Update typing_extensions imports in third-party stubs (#11245)

stubs/mock/mock/mock.pyi

@@ -2,8 +2,8 @@ from _typeshed import Incomplete
 from collections.abc import Callable, Coroutine, Iterable, Mapping, Sequence
 from contextlib import AbstractContextManager
 from types import TracebackType
-from typing import Any, ClassVar, Generic, TypeVar, overload
-from typing_extensions import Literal, ParamSpec, Self
+from typing import Any, ClassVar, Generic, Literal, TypeVar, overload
+from typing_extensions import ParamSpec, Self
 
 _F = TypeVar("_F", bound=Callable[..., Any])
 _AF = TypeVar("_AF", bound=Callable[..., Coroutine[Any, Any, Any]])