fix(deps): update dependency org.hibernate:hibernate-core to v6

Author: renovate[bot]

pom.xml

@@ -37,7 +37,7 @@
     <properties>
         <junit.version>4.13.2</junit.version>
         <logback.version>1.3.12</logback.version>
-        <hibernate.version>5.6.15.Final</hibernate.version>
+        <hibernate.version>6.6.15.Final</hibernate.version>
         <hsqldb.version>2.7.0</hsqldb.version>
         <persistence-api.version>2.2</persistence-api.version>
         <resource-server.version>1.3.1</resource-server.version>