Bump typing-extensions from 4.3.0 to 4.7.1

Bumps [typing-extensions](https://github.com/python/typing_extensions) from 4.3.0 to 4.7.1.
- [Release notes](https://github.com/python/typing_extensions/releases)
- [Changelog](https://github.com/python/typing_extensions/blob/main/CHANGELOG.md)
- [Commits](python/typing_extensions@4.3.0...4.7.1)

---
updated-dependencies:
- dependency-name: typing-extensions
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -3,7 +3,7 @@ MarkupSafe==2.1.1
 Markdown==3.3.7
 netaddr==0.8.0
 thor==0.9.6
-typing-extensions==4.3.0
+typing-extensions==4.7.1
 importlib_resources
 pylint
 mypy