Update chefstyle requirement from = 2.0.9 to = 2.1.0

Updates the requirements on [chefstyle](https://github.com/chef/chefstyle) to permit the latest version.
- [Release notes](https://github.com/chef/chefstyle/releases)
- [Changelog](https://github.com/chef/chefstyle/blob/main/CHANGELOG.md)
- [Commits](https://github.com/chef/chefstyle/compare/v2.0.9...v2.1.0

)

---
updated-dependencies:
- dependency-name: chefstyle
  dependency-type: direct:development
...

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