Build(deps): Bump nox from 2020.12.31 to 2021.6.6

Bumps [nox](https://github.com/theacodes/nox) from 2020.12.31 to 2021.6.6.
- [Release notes](https://github.com/theacodes/nox/releases)
- [Changelog](https://github.com/theacodes/nox/blob/main/CHANGELOG.md)
- [Commits](wntrblm/nox@2020.12.31...2021.6.6)

---
updated-dependencies:
- dependency-name: nox
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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