add python matrix testing

Author: Phil Varner

.github/workflows/cicd.yml

@@ -46,6 +46,11 @@ jobs:
           ES_JAVA_OPTS: -Xms512m -Xmx1g
         ports:
           - 9400:9400
+    strategy:
+      matrix:
+        python-version: [ "3.8", "3.9", "3.10" ]
+
+    name: Python ${{ matrix.python-version }} testing
 
     steps:
       - name: Check out repository code
@@ -55,8 +60,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v3
         with:
-          python-version: "3.10"
-
+          python-version: ${{ matrix.python-version }}
       - name: Lint code
         uses: pre-commit/action@v2.0.3