What is the smallest deployment of Pega Infinity 25.1 possible for building demos / proof-of-concept etc. purposes? From documentation provided I still see "Hybrid Deployment" mentioned in Pega Labs 25.1 instances making me think it is still possible to deploy 25.1 on a local Tomcat instance. If this is not possible, what is the smallest possible deployment if I already have shared externalized services setup in a local / partner cloud environment?