Test multiple python versions using GH actions

.github/workflows/run-tests.yaml

@@ -8,14 +8,17 @@ on:
 
 jobs:
   test:
+    strategy:
+      matrix:
+        python-version: [3.8, 3.9, 3.10, 3.11, 3.12]
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
         uses: actions/checkout@v2
-      - name: Set up Python 3.11
+      - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v2
         with:
-          python-version: '3.11'
+          python-version: ${{ matrix.python-version }}
       - name: Install dependencies
         run: pip install -r requirements-test.txt
       - name: Run tests