Bump sphinx from 7.0.1 to 7.2.6

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 7.0.1 to 7.2.6.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v7.0.1...v7.2.6)

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

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

requirements-dev.txt

@@ -4,5 +4,5 @@ flake8==7.0.0
 isort==5.12.0
 mypy==1.4.1
 pygments==2.17.2
-sphinx==7.0.1
+sphinx==7.2.6
 tox==4.6.3