build(deps): bump sphinxcontrib-qthelp from 1.0.3 to 1.0.6 in /docs (#2622)

Bumps [sphinxcontrib-qthelp](https://github.com/sphinx-doc/sphinxcontrib-qthelp) from 1.0.3 to 1.0.6.
- [Release notes](https://github.com/sphinx-doc/sphinxcontrib-qthelp/releases)
- [Changelog](https://github.com/sphinx-doc/sphinxcontrib-qthelp/blob/1.0.6/CHANGES)
- [Commits](sphinx-doc/sphinxcontrib-qthelp@1.0.3...1.0.6)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

docs/requirements.txt

@@ -23,5 +23,5 @@ sphinxcontrib-devhelp==1.0.2
 sphinxcontrib-serializinghtml==1.1.5
 sphinxcontrib-htmlhelp==2.0.1
 sphinxcontrib-jsmath==1.0.1
-sphinxcontrib-qthelp==1.0.3
+sphinxcontrib-qthelp==1.0.6
 urllib3==2.0.4