Update python-app.yml

.github/workflows/python-app.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        python-version: [3.5.10, 3.6, 3.7, 3.8, 3.9]
+        python-version: [3.5.10, 3.6, 3.7, 3.8, 3.9, 3.10, 3.11, 3.12]
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python