Update CI to run with Python 3.11

3 tests will show as broken in this branch:
test_Simulator__init__creates_Vehicle_and_AdapterDataSource_from_parsed_data_and_Agent_with_vehicle_when_SBN_Flag_resolves_to_True

test_ExecutionEngine_parse_data_argument_subsystems_breakdown_optional_default_is_False

test_ExecutionEngine_parse_data_sets_the_processedSimData_to_the_TimeSynchronizer_which_was_given_the_sim_data_received_from_parsed_data

.github/workflows/unit-test.yml

@@ -13,7 +13,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v4
       with:
-        python-version: 3.9
+        python-version: 3.11
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip