update Netty to version 4.1.7 (#2497)

frameworks/Java/netty/pom.xml

@@ -14,13 +14,13 @@
 		<dependency>
 			<groupId>io.netty</groupId>
 			<artifactId>netty-codec-http</artifactId>
-			<version>4.1.6.Final </version>
+			<version>4.1.7.Final </version>
 		</dependency>
 
 		<dependency>
 			<groupId>io.netty</groupId>
 			<artifactId>netty-transport-native-epoll</artifactId>
-			<version>4.1.6.Final </version>
+			<version>4.1.7.Final </version>
 			<classifier>linux-x86_64</classifier>
 		</dependency>