Bump sphinx from 5.3.0 to 6.2.1

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 5.3.0 to 6.2.1.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v5.3.0...v6.2.1)

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

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

sphinx/requirements.txt

@@ -19,7 +19,7 @@ pytz==2024.1
 requests==2.31.0
 snowballstemmer==2.2.0
 soupsieve==2.4.1
-Sphinx==5.3.0
+Sphinx==6.2.1
 sphinxcontrib-applehelp==1.0.2
 sphinxcontrib-devhelp==1.0.2
 sphinxcontrib-globalsubs==0.1.1