build(deps): bump sphinxcontrib-applehelp in /docs/sphinx

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
...

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

Author: dependabot[bot]

docs/sphinx/requirements.txt

@@ -307,9 +307,9 @@ sphinx-rtd-theme==2.0.0 \
     --hash=sha256:bd5d7b80622406762073a04ef8fadc5f9151261563d47027de09910ce03afe6b \
     --hash=sha256:ec93d0856dc280cf3aee9a4c9807c60e027c7f7b461b77aeffed682e68f0e586
     # via rules_python_docs (docs/sphinx/pyproject.toml)
-sphinxcontrib-applehelp==1.0.7 \
-    --hash=sha256:094c4d56209d1734e7d252f6e0b3ccc090bd52ee56807a5d9315b19c122ab15d \
-    --hash=sha256:39fdc8d762d33b01a7d8f026a3b7d71563ea3b72787d5f00ad8465bd9d6dfbfa
+sphinxcontrib-applehelp==1.0.8 \
+    --hash=sha256:c40a4f96f3776c4393d933412053962fac2b84f4c99a7982ba42e09576a70619 \
+    --hash=sha256:cb61eb0ec1b61f349e5cc36b2028e9e7ca765be05e49641c97241274753067b4
     # via sphinx
 sphinxcontrib-devhelp==1.0.5 \
     --hash=sha256:63b41e0d38207ca40ebbeabcf4d8e51f76c03e78cd61abe118cf4435c73d4212 \