we hava an old deployment of AES version 1.13.1 , what is the limitation of the free tier in this version, would the limitation change if we upgrade to newer version? i want to measure the current total requests so that i check if we need to upgrade from the free tier, i used the query : sum(increase(envoy_http_rq_total{namespace="ambassador",envoy_http_conn_manager_prefix="ingress_http" }[1d])) and the value is more than the limitation 10000 RPM and no limitation is enforced !