requirements: update sphinxcontrib-qthelp requirement

Updates the requirements on [sphinxcontrib-qthelp](https://github.com/sphinx-doc/sphinxcontrib-qthelp) to permit the latest version.
- [Release notes](https://github.com/sphinx-doc/sphinxcontrib-qthelp/releases)
- [Changelog](https://github.com/sphinx-doc/sphinxcontrib-qthelp/blob/master/CHANGES.rst)
- [Commits](sphinx-doc/sphinxcontrib-qthelp@1.0.0...2.0.0)

---
updated-dependencies:
- dependency-name: sphinxcontrib-qthelp
  dependency-type: direct:production
...

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

broken_trans_deps.txt

@@ -44,4 +44,4 @@ sphinxcontrib-applehelp <1.0.8
 sphinxcontrib-devhelp <1.0.6
 sphinxcontrib-htmlhelp <2.0.5
 sphinxcontrib-serializinghtml <1.1.10
-sphinxcontrib-qthelp <1.0.7
+sphinxcontrib-qthelp <2.0.1