chore(deps): bump sphinx-toolbox from 3.5.0 to 3.8.0

Bumps [sphinx-toolbox](https://github.com/sphinx-toolbox/sphinx-toolbox) from 3.5.0 to 3.8.0.
- [Release notes](https://github.com/sphinx-toolbox/sphinx-toolbox/releases)
- [Changelog](https://github.com/sphinx-toolbox/sphinx-toolbox/blob/master/doc-source/changelog.rst)
- [Commits](https://github.com/sphinx-toolbox/sphinx-toolbox/compare/v3.5.0...v3.8.0)

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

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

requirements.txt

@@ -29,7 +29,7 @@ sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-phpdomain==0.12.0
 sphinxcontrib-qthelp==1.0.7
 sphinxcontrib-serializinghtml==1.1.10
-sphinx-toolbox==3.5.0
+sphinx-toolbox==3.8.0
 sphinx-reredirects==0.1.5 
 urllib3==2.2.2
 zipp==3.20.0