Bump hibernate.version from 6.1.5.Final to 6.2.6.Final

Bumps `hibernate.version` from 6.1.5.Final to 6.2.6.Final.

Updates `hibernate-jpamodelgen` from 6.1.5.Final to 6.2.6.Final
- [Release notes](https://github.com/hibernate/hibernate-orm/releases)
- [Changelog](https://github.com/hibernate/hibernate-orm/blob/6.2.6/changelog.txt)
- [Commits](hibernate/hibernate-orm@6.1.5...6.2.6)

Updates `hibernate-core` from 6.1.5.Final to 6.2.6.Final
- [Release notes](https://github.com/hibernate/hibernate-orm/releases)
- [Changelog](https://github.com/hibernate/hibernate-orm/blob/6.2.6/changelog.txt)
- [Commits](hibernate/hibernate-orm@6.1.5...6.2.6)

---
updated-dependencies:
- dependency-name: org.hibernate.orm:hibernate-jpamodelgen
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.hibernate.orm:hibernate-core
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

pom.xml

@@ -26,7 +26,7 @@
     <dbunit>2.7.3</dbunit>
     <spring-test-dbunit>1.3.0</spring-test-dbunit>
     <spring.framework.version>6.0.10</spring.framework.version>
-    <hibernate.version>6.1.5.Final</hibernate.version>
+    <hibernate.version>6.2.6.Final</hibernate.version>
     <hsqldb.version>2.7.2</hsqldb.version>
     <assertj>3.24.2</assertj>
     <logback>1.4.8</logback>