Bump sphinx from 7.2.5 to 7.2.6

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 7.2.5 to 7.2.6.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES)
- [Commits](sphinx-doc/sphinx@v7.2.5...v7.2.6)

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

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

requirements-optional.txt

@@ -5,7 +5,7 @@ redis==5.0.0
 pre-commit==3.4.0
 
 # For generating documentation.
-sphinx==7.2.5
+sphinx==7.2.6
 sphinx-autoapi==2.1.1
 
 # For 'manage' interactive shell