Bump actions/setup-python from 2.3.2 to 3 (#1101)

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 2.3.2 to 3.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v2.3.2...v3)

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

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

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -49,7 +49,7 @@ jobs:
     steps:
       - uses: actions/[email protected]
       - name: Setup python
-        uses: actions/setup-python@v2.3.2
+        uses: actions/setup-python@v3
         with:
           python-version: ${{ matrix.PYTHON.VERSION }}
       - run: python -m pip install tox coverage