Update typing-extensions requirement from ~=4.7 to ~=4.8 (#32)

Updates the requirements on [typing-extensions](https://github.com/python/typing_extensions) to permit the latest version.
- [Release notes](https://github.com/python/typing_extensions/releases)
- [Changelog](https://github.com/python/typing_extensions/blob/main/CHANGELOG.md)
- [Commits](python/typing_extensions@4.7.0...4.8.0)

---
updated-dependencies:
- dependency-name: typing-extensions
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements_test_min.txt

@@ -1,6 +1,6 @@
 -e .[testutils,spelling]
 astroid
-typing-extensions~=4.7
+typing-extensions~=4.8
 pytest~=7.4
 pytest-benchmark~=4.0
 pytest-timeout~=2.1