Bump typing-extensions from 4.1.1 to 4.2.0
Bumps [typing-extensions](https://github.com/python/typing) from 4.1.1 to 4.2.0.
- [Release notes](https://github.com/python/typing/releases)
- [Changelog](https://github.com/python/typing/blob/master/typing_extensions/CHANGELOG.md)
- [Commits](https://github.com/python/typing/compare/4.1.1...4.2.0)
---
updated-dependencies:
- dependency-name: typing-extensions
dependency-type: direct:development
update-type: version-update:semver-minor
...
Signed-off-by: dependabot[bot] <support@github.com>