Upgrade to Jetty 9.4.18 and Netty 4.1.36

Author: jhoeller

build.gradle

@@ -33,11 +33,11 @@ ext {
 	groovyVersion        = "2.5.6"
 	hsqldbVersion        = "2.4.1"
 	jackson2Version      = "2.9.8"
-	jettyVersion         = "9.4.17.v20190418"
+	jettyVersion         = "9.4.18.v20190429"
 	junit5Version        = "5.3.2"
 	kotlinVersion        = "1.2.71"
 	log4jVersion         = "2.11.2"
-	nettyVersion         = "4.1.35.Final"
+	nettyVersion         = "4.1.36.Final"
 	reactorVersion       = "Californium-BUILD-SNAPSHOT"
 	rxjavaVersion        = "1.3.8"
 	rxjavaAdapterVersion = "1.2.1"