build(deps-dev): Bump sphinxcontrib-devhelp from 1.0.5 to 1.0.6

Bumps [sphinxcontrib-devhelp](https://github.com/sphinx-doc/sphinxcontrib-devhelp) from 1.0.5 to 1.0.6.
- [Release notes](https://github.com/sphinx-doc/sphinxcontrib-devhelp/releases)
- [Changelog](https://github.com/sphinx-doc/sphinxcontrib-devhelp/blob/1.0.6/CHANGES)
- [Commits](sphinx-doc/sphinxcontrib-devhelp@1.0.5...1.0.6)

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

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