Bump sphinx-toolbox from 4.0.0 to 4.1.2

Bumps [sphinx-toolbox](https://github.com/sphinx-toolbox/sphinx-toolbox) from 4.0.0 to 4.1.2.
- [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](sphinx-toolbox/sphinx-toolbox@v4.0.0...v4.1.2)

---
updated-dependencies:
- dependency-name: sphinx-toolbox
  dependency-version: 4.1.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

documentation-requirements.txt

@@ -7,7 +7,7 @@ sphinx-jinja2-compat==0.3.0
 sphinx-prompt==1.9.0
 sphinx-rtd-theme==3.0.2
 sphinx-tabs==3.4.7
-sphinx-toolbox==4.0.0
+sphinx-toolbox==4.1.2
 sphinxcontrib-applehelp==2.0.0
 sphinxcontrib-devhelp==2.0.0
 sphinxcontrib-htmlhelp==2.1.0