Update to hibernate-core 5.2.18.Final

Fixes gh-8301

Author: eleftherias

gradle/dependency-management.gradle

@@ -158,7 +158,7 @@ dependencyManagement {
 		dependency 'org.hamcrest:hamcrest-core:1.3'
 		dependency 'org.hibernate.common:hibernate-commons-annotations:5.0.1.Final'
 		dependency 'org.hibernate.javax.persistence:hibernate-jpa-2.1-api:1.0.0.Final'
-		dependency 'org.hibernate:hibernate-core:5.2.17.Final'
+		dependency 'org.hibernate:hibernate-core:5.2.18.Final'
 		dependency 'org.hibernate:hibernate-entitymanager:5.2.18.Final'
 		dependency 'org.hibernate:hibernate-validator:6.0.18.Final'
 		dependency 'org.hsqldb:hsqldb:2.4.1'