chore(deps-dev): bump sphinx from 6.1.3 to 6.2.1 (#88)

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 6.1.3 to 6.2.1.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES)
- [Commits](sphinx-doc/sphinx@v6.1.3...v6.2.1)

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

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Author: dependabot[bot]