Add Camunda example with Jakarta Transaction Synchronization

Prove the Camunda race condition when using asynchronous continuations

Add Camunda async continutation test case

Add a check for the PostgreSQL connection

Add DELAYED_ACQUISITION_AND_RELEASE_AFTER_TRANSACTION use case

Add different DBs for the XA transactions

Simplify the Narayana and Atomikos integration tests to reuse the common code base

Add a Camunda integration test

Fix version change not firing for entity remove

Upgrade to Hibernate 7.2.4, Spring Framework 7.0.3 and Spring Data JPA 4.0.3

Upgrade surefire plugin

Add 3-way fetch using Record-base constructor expression

Prove that the entity fetched via projection is managed

Add more tests for SQL Server UNION queries

Add push down predicate test cases