build(deps): bump sphinxcontrib-applehelp from 1.0.7 to 1.0.8 in /docs (#3137)

Bumps [sphinxcontrib-applehelp](https://github.com/sphinx-doc/sphinxcontrib-applehelp) from 1.0.7 to 1.0.8.
- [Release notes](https://github.com/sphinx-doc/sphinxcontrib-applehelp/releases)
- [Changelog](https://github.com/sphinx-doc/sphinxcontrib-applehelp/blob/master/CHANGES)
- [Commits](sphinx-doc/sphinxcontrib-applehelp@1.0.7...1.0.8)

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

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Author: dependabot[bot]

docs/requirements.txt

@@ -18,7 +18,7 @@ requests==2.31.0
 snowballstemmer==2.2.0
 sphinx-favicon==1.0.1
 sphinx-rtd-theme==2.0.0
-sphinxcontrib-applehelp==1.0.7
+sphinxcontrib-applehelp==1.0.8
 sphinxcontrib-devhelp==1.0.5
 sphinxcontrib-htmlhelp==2.0.4
 sphinxcontrib-jsmath==1.0.1