chore(deps-dev): bump sphinx-click from 2.5.0 to 2.6.0

Bumps [sphinx-click](https://github.com/stephenfin/sphinx-click) from 2.5.0 to 2.6.0.
- [Release notes](https://github.com/stephenfin/sphinx-click/releases)
- [Commits](click-contrib/sphinx-click@2.5.0...2.6.0)

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

dev-requirements.txt

@@ -11,7 +11,7 @@ sphinx-bootstrap-theme==0.7.1
 sphinxcontrib-websupport==1.1.2;python_version<'3.0'
 sphinxcontrib-websupport==1.2.4;python_version>='3.6'
 sphinxcontrib-fulltoc==1.2.0
-sphinx-click==2.5.0
+sphinx-click==2.6.0
 twine==1.13.0;python_version<'3.0'
 twine==3.3.0;python_version>='3.6'
 wheel==0.36.2