Bump Netty to 4.2.0

Author: ShonP40

pom.xml

@@ -41,8 +41,13 @@
         </dependency>
         <dependency>
             <groupId>io.netty</groupId>
-            <artifactId>netty-all</artifactId>
-            <version>4.1.68.Final</version>
+            <artifactId>netty-buffer</artifactId>
+            <version>4.2.0.Final</version>
+        </dependency>
+        <dependency>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-common</artifactId>
+            <version>4.2.0.Final</version>
         </dependency>
     </dependencies>