Bump sphinx-click from 3.0.2 to 3.0.3 in /docs

Bumps [sphinx-click](https://github.com/stephenfin/sphinx-click) from 3.0.2 to 3.0.3.
- [Release notes](https://github.com/stephenfin/sphinx-click/releases)
- [Commits](click-contrib/sphinx-click@3.0.2...3.0.3)

---
updated-dependencies:
- dependency-name: sphinx-click
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

docs/requirements.txt

@@ -1,3 +1,3 @@
 sphinx==4.4.0
-sphinx-click==3.0.2
+sphinx-click==3.0.3
 sphinx-rtd-theme==1.0.0