feat: change image CMD to celery v5 compatibility

This is a proposal in order to allow ecommerce-worker increase celery to v5.4.7.

This upgrade of celery in the following PR: openedx-unsupported/ecommerce-worker#247

tutorecommerce/templates/ecommerce/build/ecommerce-worker/Dockerfile

@@ -26,4 +26,4 @@ RUN --mount=type=cache,target=/openedx/.cache/pip,sharing=shared pip install \
 RUN --mount=type=cache,target=/openedx/.cache/pip,sharing=shared pip install -r requirements/production.txt
 
 ENV WORKER_CONFIGURATION_MODULE ecommerce_worker.settings.production
-CMD celery worker --app=ecommerce_worker.celery_app:app --loglevel=info  --maxtasksperchild 100 --queue=fulfillment,email_marketing
+CMD celery --app=ecommerce_worker.celery_app:app worker  --loglevel=info  --max-tasks-per-child 100 --queues=fulfillment,email_marketing