Bump actions/setup-python from 3 to 4

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 3 to 4.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](https://github.com/actions/setup-python/compare/v3...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/deploy.yml

@@ -24,7 +24,7 @@ jobs:
           submodules: 'true'
 
       - name: Set up Python runtime
-        uses: actions/setup-python@v3
+        uses: actions/setup-python@v4
         with:
           python-version: '3.7'
       

.github/workflows/preview.yml

@@ -27,7 +27,7 @@ jobs:
           submodules: 'true'
 
       - name: Set up Python runtime
-        uses: actions/setup-python@v3
+        uses: actions/setup-python@v4
         with:
           python-version: '3.7'