build(deps): bump sphinxcontrib-applehelp from 1.0.4 to 1.0.8

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](sphinx-doc/sphinxcontrib-applehelp@1.0.4...1.0.8)

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

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

docs/requirements.txt

@@ -12,7 +12,7 @@ snowballstemmer==2.2.0
 sphinx==6.2.0
 sphinx-jsonschema==1.19.1
 sphinx-rtd-theme==1.3.0
-sphinxcontrib-applehelp==1.0.4
+sphinxcontrib-applehelp==1.0.8
 sphinxcontrib-devhelp==1.0.2
 sphinxcontrib-htmlhelp==2.0.1
 sphinxcontrib-jsmath==1.0.1