Bump radon from 5.1.0 to 6.0.1

Bumps [radon](https://github.com/rubik/radon) from 5.1.0 to 6.0.1.
- [Release notes](https://github.com/rubik/radon/releases)
- [Changelog](https://github.com/rubik/radon/blob/master/CHANGELOG)
- [Commits](rubik/radon@v5.1.0...v6.0.1)

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

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