fix(notification-service): force MOCK_MODE=false in production deploy

.github/workflows/notification-service.yml

@@ -117,6 +117,7 @@ jobs:
             -e AIR_QUALITY_API_URL=$AIR_QUALITY_API_URL \
             -e API_USERNAME=$API_USERNAME \
             -e API_PASSWORD=$API_PASSWORD \
+            -e MOCK_MODE=false \
             $SHA_TAG
           EOF"
           rm /tmp/deploy_key /tmp/deploy_key-cert.pub