Upgrade Netty to 3.10.5.final

This fixes a critical bug in SSL handling.

See http://netty.io/news/2015/10/13/3-10-5-Final.html

See #14105

Author: s1monw

pom.xml

@@ -267,7 +267,7 @@
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty</artifactId>
-            <version>3.10.3.Final</version>
+            <version>3.10.5.Final</version>
             <scope>compile</scope>
         </dependency>