Install more packages in workflow for testing

.github/workflows/build_flake_pytest_ubuntu2004.yml

@@ -38,7 +38,7 @@ jobs:
         python -m pip install --upgrade pip
         python -m pip install flake8 pytest
         if [ -f requirements.txt ]; then python -m pip install -r requirements.txt; fi
-        python -m pip install .
+        python -m pip install .[full]
     - name: Lint with flake8
       run: |
         # stop the build if there are Python syntax errors or undefined names