Update actions/setup-python requirement to v2.2.1 (#863)

Updates the requirements on [actions/setup-python](https://github.com/actions/setup-python) to permit the latest version.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](https://github.com/actions/setup-python/commits/3105fb18c05ddd93efea5f9e0bef7a03a6e9e7df)

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

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

Author: dependabot[bot]

.github/workflows/format-command.yml

@@ -21,7 +21,7 @@ jobs:
           ref: ${{ github.event.client_payload.pull_request.head.ref }}
 
       # Setup Python environment
-      - uses: actions/setup-python@v1
+      - uses: actions/setup-python@v2.2.1
 
       # Install formatting tools
       - name: Install formatting tools

.github/workflows/publish-to-pypi.yml

@@ -28,7 +28,7 @@ jobs:
         fetch-depth: 0
 
     - name: Set up Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v2.2.1
       with:
         python-version: 3.9
 

.github/workflows/style_checks.yaml

@@ -20,7 +20,7 @@ jobs:
 
       # Setup Miniconda
       - name: Set up Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v2.2.1
         with:
           python-version: 3.9