Bump sphinx from 5.0.2 to 5.1.0

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:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

dev-requirements.txt

@@ -8,7 +8,7 @@ pytest==7.1.2
 pytest-cov==3.0.0
 
 # Required to test building the docs
-sphinx==5.0.2
+sphinx==5.1.0
 
 # Mypy test requirements
 mypy==0.961