Update sphinxcontrib-qthelp requirement from <=1.0.3 to <=1.0.7

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/1.0.7/CHANGES)
- [Commits](sphinx-doc/sphinxcontrib-qthelp@1.0.0...1.0.7)

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

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

tests/requirements.txt

@@ -14,5 +14,5 @@ sphinxcontrib-applehelp<=1.0.4
 sphinxcontrib-devhelp<=1.0.2
 sphinxcontrib-htmlhelp<=2.0.1
 sphinxcontrib-jsmath<=1.0.1
-sphinxcontrib-qthelp<=1.0.3
+sphinxcontrib-qthelp<=1.0.7
 sphinxcontrib-serializinghtml<=1.1.5