Fix CI issue for postgres with django 2.2.

.github/workflows/github_action_test_suite.yml

@@ -64,7 +64,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install wheel
-        pip install psycopg2-binary
+        pip install psycopg2-binary>=2.8,<2.9   # fix issue for Django 2.2
         pip install mysqlclient
         pip install coveralls
         pip install codacy-coverage