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

stubs/openpyxl/@tests/test_cases/check_base_descriptors.py

@@ -4,8 +4,8 @@ from __future__ import annotations
 
 from _typeshed import ReadableBuffer
 from datetime import date, datetime, time
-from typing import Any, List, Tuple, Union
-from typing_extensions import Literal, assert_type
+from typing import Any, List, Literal, Tuple, Union
+from typing_extensions import assert_type
 
 from openpyxl.descriptors import Strict
 from openpyxl.descriptors.base import (

stubs/openpyxl/@tests/test_cases/check_nested_descriptors.py

@@ -4,8 +4,8 @@
 # These tests are essentially a mirror of check_base_descriptors
 from __future__ import annotations
 
-from typing import Union, cast
-from typing_extensions import Literal, assert_type
+from typing import Literal, Union, cast
+from typing_extensions import assert_type
 
 from openpyxl.descriptors import Strict
 from openpyxl.descriptors.nested import (