Upgrade to Jackson 2.9.4 and RxJava 2.1.9

build.gradle

@@ -45,7 +45,7 @@ configure(allprojects) { project ->
 	ext.freemarkerVersion    = "2.3.27-incubating"
 	ext.groovyVersion        = "2.4.13"
 	ext.hsqldbVersion        = "2.4.0"
-	ext.jackson2Version      = "2.9.3"
+	ext.jackson2Version      = "2.9.4"
 	ext.jettyVersion         = "9.4.8.v20171121"
 	ext.junitJupiterVersion  = "5.0.3"
 	ext.junitPlatformVersion = "1.0.3"
@@ -56,7 +56,7 @@ configure(allprojects) { project ->
 	ext.reactorVersion       = "Bismuth-SR5"
 	ext.rxjavaVersion        = "1.3.4"
 	ext.rxjavaAdapterVersion = "1.2.1"
-	ext.rxjava2Version       = "2.1.8"
+	ext.rxjava2Version       = "2.1.9"
 	ext.slf4jVersion         = "1.7.25"	// spring-jcl + consistent 3rd party deps
 	ext.tiles3Version        = "3.0.8"
 	ext.tomcatVersion        = "8.5.27"