Bump actions/setup-python from 4.5.0 to 4.6.0 (#351)

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 4.5.0 to 4.6.0.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@d27e3f3...57ded4d)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/docs.yml

@@ -28,7 +28,7 @@ jobs:
             pypi.org:443
 
       - uses: actions/checkout@8f4b7f84864484a7bf31766abe9204da3cbe65b3
-      - uses: actions/setup-python@d27e3f3d7c64b4bbf8e4abfb9b63b83e846e0435
+      - uses: actions/setup-python@57ded4d7d5e986d7296eab16560982c6dd7c923b
         with:
           python-version: 3.x
       - run: pip install mkdocs-material mkdocs-awesome-pages-plugin