Migrate to Hibernate 5.6.x

This recipe will apply changes commonly needed when migrating from Hibernate 4.x or an earlier 5.x release to 5.6.x. Hibernate ORM dependencies are upgraded to 5.6.x, the hibernate-entitymanager, hibernate-java8 and hibernate-annotations artifacts that were merged into hibernate-core are replaced by it, and types that were removed in 5.x are replaced by their successors, including the JPA provider in persistence.xml.