Update workflow to run backend tests for all supported python versions

.github/workflows/test.yml

@@ -24,13 +24,20 @@ jobs:
   test:
     name: Run Tests
     runs-on: ubuntu-latest
-    steps:
+    strategy:
+      fail-fast: false
+      matrix:
+        python_version:
+          - 3.8
+          - 3.9
+          - 3.10
+     steps:
       - uses: actions/checkout@v3
 
-      - name: Set up Python 3.10
+      - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.10'
+          python-version: ${{ matrix.python_version }}
 
       - name: Install Dependencies
         run: |