Upgrade to Hibernate 5.2.18.Final

Closes gh-15911

spring-boot-project/spring-boot-dependencies/pom.xml

@@ -68,7 +68,7 @@
 		<hamcrest.version>1.3</hamcrest.version>
 		<hazelcast.version>3.9.4</hazelcast.version>
 		<hazelcast-hibernate5.version>1.2.3</hazelcast-hibernate5.version>
-		<hibernate.version>5.2.17.Final</hibernate.version>
+		<hibernate.version>5.2.18.Final</hibernate.version>
 		<hibernate-jpa-2.1-api.version>1.0.2.Final</hibernate-jpa-2.1-api.version>
 		<hibernate-validator.version>6.0.14.Final</hibernate-validator.version>
 		<hikaricp.version>2.7.9</hikaricp.version>