Bump typing-extensions from 3.10.0.2 to 4.0.0 (#638)

Bumps [typing-extensions](https://github.com/python/typing) from 3.10.0.2 to 4.0.0.
- [Release notes](https://github.com/python/typing/releases)
- [Changelog](https://github.com/python/typing/blob/master/typing_extensions/CHANGELOG)
- [Commits](python/typing@3.10.0.2...4.0.0)

---
updated-dependencies:
- dependency-name: typing-extensions
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

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

Author: dependabot[bot]

requirements-dev.txt

@@ -22,5 +22,5 @@ pytest-cov==3.0.0
 pytest-mock==3.6.1
 pytest-sugar==0.9.4
 sphinx==4.3.0
-typing-extensions==3.10.0.2
+typing-extensions==4.0.0
 yarl==1.7.2