Upgrade Javassist 3.19.0

Author: Stephane Landelle

providers/netty4/pom.xml

@@ -21,7 +21,7 @@
 		<dependency>
 			<groupId>org.javassist</groupId>
 			<artifactId>javassist</artifactId>
-			<version>3.18.2-GA</version>
+			<version>3.19.0-GA</version>
 		</dependency>
 		<dependency>
 			<groupId>com.jcraft</groupId>