Bump sphinxcontrib-devhelp from 1.0.2 to 1.0.5

Bumps [sphinxcontrib-devhelp](https://github.com/sphinx-doc/sphinxcontrib-devhelp) from 1.0.2 to 1.0.5.
- [Release notes](https://github.com/sphinx-doc/sphinxcontrib-devhelp/releases)
- [Changelog](https://github.com/sphinx-doc/sphinxcontrib-devhelp/blob/1.0.5/CHANGES)
- [Commits](sphinx-doc/sphinxcontrib-devhelp@1.0.2...1.0.5)

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

Signed-off-by: dependabot[bot] <[email protected]>

doc/requirements.txt

@@ -1,6 +1,6 @@
 sphinx-rtd-theme==1.2.2
 sphinxcontrib-applehelp==1.0.4; python_version >= "3.5"
-sphinxcontrib-devhelp==1.0.2; python_version >= "3.5"
+sphinxcontrib-devhelp==1.0.5; python_version >= "3.5"
 sphinxcontrib-htmlhelp==2.0.1; python_version >= "3.5"
 sphinxcontrib-jsmath==1.0.1; python_version >= "3.5"
 sphinxcontrib-qthelp==1.0.3; python_version >= "3.5"