Bump sphinx from 5.0.2 to 5.1.0 (#295)

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 5.0.2 to 5.1.0.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/5.x/CHANGES)
- [Commits](sphinx-doc/sphinx@v5.0.2...v5.1.0)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pyproject.toml

@@ -53,7 +53,7 @@ nitpick = "^0.29"
 safety = "^2.1"
 mypy = "^0.971"
 
-sphinx = "^5.0"
+sphinx = "^5.1"
 sphinx-readable-theme = "^1.3"
 m2r2 = "^0.3"
 doc8 = "^0.11"