Bump actions/setup-python from 1 to 4

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 1 to 4.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](https://github.com/actions/setup-python/compare/v1...v4)

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

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

.github/workflows/black-and-deploy.yml

@@ -11,7 +11,7 @@ jobs:
       - uses: actions/checkout@v2
         with:  # https://github.com/stefanzweifel/git-auto-commit-action#checkout-the-correct-branch
             ref: ${{ github.head_ref }}
-      - uses: actions/setup-python@v1
+      - uses: actions/setup-python@v4
       - run: pip install black
       - run: black --check .
       - name: If needed, commit black changes to a new pull request