Bumped netty-all to the latest working version

`4.1.68.Final`

Author: ShonP40

pom.xml

@@ -42,7 +42,7 @@
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-all</artifactId>
-            <version>4.1.42.Final</version>
+            <version>4.1.68.Final</version>
         </dependency>
     </dependencies>