Bump actions/setup-python from 4 to 5 (#594)

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 4 to 5.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v4...v5)

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

.github/workflows/stubs.yml

@@ -30,7 +30,7 @@ jobs:
       if: github.event_name == 'push' && github.repository == 'ECP-WarpX/impactx' && github.ref == 'refs/heads/development'
       run: git pull
 
-    - uses: actions/setup-python@v4
+    - uses: actions/setup-python@v5
       name: Install Python
       with:
         python-version: '3.9'