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.rst)
- [Commits](https://github.com/sphinx-doc/sphinx/compare/v7.2.5...v7.2.6)

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

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

requirements-dev.txt

@@ -8,7 +8,7 @@ selenium==4.12.0
 twine==4.0.2
 Pallets-Sphinx-Themes==2.1.1
 Sphinx<=7.1.2; python_version == '3.8'
-Sphinx==7.2.5; python_version > '3.8'
+Sphinx==7.2.6; python_version > '3.8'
 sphinx-issues==3.0.1
 sphinx-jinja==2.0.2
 sphinx-tabs==3.4.1