update template with python versions

Author: ohmayr

.github/workflows/unittest.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-22.04
     strategy:
       matrix:
-        python: {{unit_test_python_versions}}
+        python: ['3.7', '3.8', '3.9', '3.10', "3.11", "3.12", "3.13"]
     steps:
     - name: Checkout
       uses: actions/checkout@v4