rollback to python3.11 and revert back of pipfile contents as per peer review

Author: schniber

.github/workflows/unit-test.yml

@@ -22,10 +22,10 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Set up Python 3.12
+      - name: Set up Python 3.11
         uses: actions/setup-python@v5
         with:
-          python-version: 3.12
+          python-version: 3.11
 
       - name: Install pipenv
         run: |