Bump sphinx from 6.1.3 to 7.1.2

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 6.1.3 to 7.1.2.
- [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...v7.1.2)

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

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

requirements.txt

@@ -14,7 +14,7 @@ pytz==2023.3
 requests==2.31.0
 six==1.16.0
 snowballstemmer==2.2.0
-Sphinx==6.1.3
+Sphinx==7.1.2
 sphinxcontrib-applehelp==1.0.6
 sphinxcontrib-devhelp==1.0.4
 sphinxcontrib-htmlhelp==2.0.3