actions: udpate to use @main version

Author: clstaudt

.github/workflows/python-package.yml

@@ -19,9 +19,9 @@ jobs:
         python-version: ["3.8", "3.9", "3.10", "3.11"]
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@main
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@main
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies