Spring Remove Hibernate substitutions and deprecated properties usage

As a follow-up of https://github.com/spring-projects/spring-framework/issues/32311, let's raise the baseline to Hibernate 6.5 (at least for native) in order to leverage https://hibernate.atlassian.net/browse/HHH-17568 and https://hibernate.atlassian.net/browse/HHH-17643 in order to remove the 2 Hibernate substitutions required to avoid Bytebuddy breaking native support with Hibernate.

Comment From: sdeleuze

Tested successfully with Petclinic and: - Removing Target_BytecodeProvider and Target_BytecodeProviderInitiator substitutions - Using Hibernate 6.5.0.Final and related metadata