Update dependency org.hibernate:hibernate-core to v6

Author: renovate[bot]

gradle.properties

@@ -15,7 +15,7 @@ commonsLang3Version=3.14.0
 dozerVersion=5.5.1
 ehcacheVersion=3.9.0
 guavaVersion=31.1-jre
-hibernateVersion=5.4.26.Final
+hibernateVersion=6.5.1.Final
 httpclientVersion=3.1
 httpcomponentsVersion=4.5.14
 hsqldbVersion=2.5.0