Bump codespell from 2.1.0 to 2.2.1 (#422)

Bumps [codespell](https://github.com/codespell-project/codespell) from 2.1.0 to 2.2.1.
- [Release notes](https://github.com/codespell-project/codespell/releases)
- [Commits](codespell-project/codespell@v2.1.0...v2.2.1)

---
updated-dependencies:
- dependency-name: codespell
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]