build(deps): bump sphinx from 5.3.0 to 6.1.3

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 5.3.0 to 6.1.3.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES)
- [Commits](sphinx-doc/sphinx@v5.3.0...v6.1.3)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements/local.txt

@@ -13,7 +13,7 @@ pytest-sugar==0.9.6  # https://github.com/Frozenball/pytest-sugar
 
 # Documentation
 # ------------------------------------------------------------------------------
-sphinx==5.3.0  # https://github.com/sphinx-doc/sphinx
+sphinx==6.1.3  # https://github.com/sphinx-doc/sphinx
 sphinx-autobuild==2021.3.14 # https://github.com/GaretJax/sphinx-autobuild
 
 # Code quality