Updates ES version to 5.4.2

Author: otaviojava

elasticsearch-driver/pom.xml

@@ -86,7 +86,7 @@
         <dependency>
             <groupId>org.elasticsearch.client</groupId>
             <artifactId>transport</artifactId>
-            <version>5.3.0</version>
+            <version>5.4.2</version>
         </dependency>
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>