Merge pull request #209 from mkurz/netty104_2x

[2.0.x] Netty 4.1.104

Author: mkurz

pom.xml

@@ -84,7 +84,7 @@
     </dependencyManagement>
 
     <properties>
-        <netty.version>4.1.101.Final</netty.version>
+        <netty.version>4.1.104.Final</netty.version>
         <reactive-streams.version>1.0.4</reactive-streams.version>
         <akka-stream.version>2.6.21</akka-stream.version>
         <maven-bundle-plugin.version>5.1.9</maven-bundle-plugin.version>