only commit once, rather than for every insert

if we insert a valid row, that'll mean we properly roll back the delete of old data

app/dao/fact_notification_status_dao.py

@@ -108,7 +108,7 @@ def update_fact_notification_status(data, process_day):
             notification_count=row.notification_count,
         )
         db.session.connection().execute(stmt)
-        db.session.commit()
+    db.session.commit()
 
 
 def fetch_notification_status_for_service_by_month(start_date, end_date, service_id):