updated github actions workflow

Author: wolph

.github/workflows/main.yml

@@ -14,9 +14,9 @@ jobs:
         python-version: ['3.7', '3.8', '3.9', '3.10', '3.11-dev']
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v3
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install dependencies
@@ -36,9 +36,9 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 2
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: '3.10'
     - name: Install dependencies