mypy

Update 'typing_extensions' to >=4.6.0 to fix python 3.12 error

#17312

Merged

Traceback (most recent call last):
  File ".../bin/mypy", line 5, in <module>
    from mypy.__main__ import console_entry
  File ".../lib/python3.12/site-packages/mypy/__main__.py", line 9, in <module>
    from mypy.main import main, process_options
  File ".../lib/python3.12/site-packages/mypy/main.py", line 12, in <module>
    from typing_extensions import Final
  File ".../lib/python3.12/site-packages/typing_extensions.py", line 1174, in <module>
    class TypeVar(typing.TypeVar, _DefaultMixin, _root=True):
TypeError: type 'typing.TypeVar' is not an acceptable base type