Upgrade to Tomcat 8.5.35, Netty 4.1.31, Gson 2.8.5, Jackson 2.8.11.3

Also includes Apache HttpClient 4.5.6 and HttpAsyncClient 4.1.4.

Author: jhoeller

build.gradle

@@ -41,7 +41,7 @@ configure(allprojects) { project ->
 	ext.fileuploadVersion    = "1.3.3"
 	ext.freemarkerVersion    = "2.3.23"
 	ext.groovyVersion        = "2.4.15"
-	ext.gsonVersion          = "2.8.2"
+	ext.gsonVersion          = "2.8.5"
 	ext.guavaVersion         = "20.0"
 	ext.hamcrestVersion      = "1.3"
 	ext.hibernate3Version    = "3.6.10.Final"
@@ -50,9 +50,9 @@ configure(allprojects) { project ->
 	ext.hibval4Version       = "4.3.2.Final"
 	ext.hibval5Version       = "5.2.5.Final"
 	ext.hsqldbVersion        = "2.3.4"
-	ext.httpasyncVersion     = "4.1.3"
-	ext.httpclientVersion    = "4.5.5"
-	ext.jackson2Version      = "2.8.11.2"
+	ext.httpasyncVersion     = "4.1.4"
+	ext.httpclientVersion    = "4.5.6"
+	ext.jackson2Version      = "2.8.11.3"
 	ext.jasperreportsVersion = "6.2.1"  // our tests fail with JR-internal NPEs against 6.2.2 and higher
 	ext.javamailVersion      = "1.5.6"
 	ext.jettyVersion         = "9.3.14.v20161028"  // as of 9.3.15, Jetty has hard Servlet 3.1 requirement
@@ -62,7 +62,7 @@ configure(allprojects) { project ->
 	ext.jtaVersion           = "1.2"
 	ext.junitVersion         = "4.12"
 	ext.log4jVersion         = "1.2.17"
-	ext.nettyVersion         = "4.1.29.Final"
+	ext.nettyVersion         = "4.1.31.Final"
 	ext.okhttpVersion        = "2.7.5"
 	ext.okhttp3Version       = "3.8.1"
 	ext.openjpaVersion       = "2.4.2"
@@ -75,7 +75,7 @@ configure(allprojects) { project ->
 	ext.testngVersion        = "6.9.10"
 	ext.tiles2Version        = "2.2.2"
 	ext.tiles3Version        = "3.0.8"
-	ext.tomcatVersion        = "8.5.34"
+	ext.tomcatVersion        = "8.5.35"
 	ext.tyrusVersion         = "1.3.5"  // constrained by WebLogic 12.1.3 support
 	ext.undertowVersion      = "1.3.33.Final"
 	ext.xmlunitVersion       = "1.6"