Merge pull request #57 from tobiashuste/setup-python-action-v4

Use setup-python action version 4

Author: tobiashuste

.github/workflows/prepare-action/action.yml

@@ -14,7 +14,7 @@ runs:
       shell: bash
 
     - name: Set up Python 3.
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v4
       id: setup-python
       with:
         python-version: '3.9'