Bump sphinxcontrib-applehelp from 1.0.4 to 1.0.8 (#1024)

Bumps [sphinxcontrib-applehelp](https://github.com/sphinx-doc/sphinxcontrib-applehelp) from 1.0.4 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](https://github.com/sphinx-doc/sphinxcontrib-applehelp/compare/1.0.4...1.0.8)

---
updated-dependencies:
- dependency-name: sphinxcontrib-applehelp
  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>

docs/requirements.txt

@@ -38,7 +38,7 @@ sphinx-autobuild==2021.3.14
 sphinx-basic-ng==1.0.0b1
 sphinx-click==4.3.0
 sphinx-rtd-theme==2.0.0
-sphinxcontrib-applehelp==1.0.4
+sphinxcontrib-applehelp==1.0.8
 sphinxcontrib-devhelp==1.0.2
 sphinxcontrib-htmlhelp==2.0.1
 sphinxcontrib-jquery==4.1