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

Author: renovate[bot]

plugin/src/docs/code/s2-quickstart/build.gradle

@@ -43,7 +43,7 @@ dependencies {
     implementation "org.grails.plugins:async"
     implementation "org.grails.plugins:scaffolding"
     implementation "org.grails.plugins:hibernate5"
-    implementation "org.hibernate:hibernate-core:5.6.15.Final"
+    implementation "org.hibernate:hibernate-core:6.6.8.Final"
     implementation "org.grails.plugins:events"
     implementation "org.grails.plugins:gsp"
     profile "org.grails.profiles:web"