setup-python v4

Author: RonnyPfannschmidt

.github/workflows/main.yml

@@ -92,7 +92,7 @@ jobs:
         fetch-depth: 0
 
     - name: Set up Python ${{ matrix.python }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python }}
 
@@ -124,7 +124,7 @@ jobs:
         with:
           fetch-depth: 0
 
-      - uses: actions/setup-python@v2
+      - uses: actions/setup-python@v4
         with:
           python-version: "3.8"