Upgrade to Hazelcast 3.4.2

Closes gh-2978

spring-boot-dependencies/pom.xml

@@ -73,7 +73,7 @@
 		<gson.version>2.3.1</gson.version>
 		<h2.version>1.4.185</h2.version>
 		<hamcrest.version>1.3</hamcrest.version>
-		<hazelcast.version>3.4.1</hazelcast.version>
+		<hazelcast.version>3.4.2</hazelcast.version>
 		<hibernate.version>4.3.10.Final</hibernate.version>
 		<hibernate-entitymanager.version>${hibernate.version}</hibernate-entitymanager.version>
 		<hibernate-validator.version>5.1.3.Final</hibernate-validator.version>