Upgrade to Jackson 2.9.8 and Groovy 2.4.16

Includes upgrade to AspectJ 1.9.2 for spring-aspects compilation.

build.gradle

@@ -38,9 +38,9 @@ ext {
 
 	aspectjVersion       = "1.8.13"
 	freemarkerVersion    = "2.3.28"
-	groovyVersion        = "2.4.15"
+	groovyVersion        = "2.4.16"
 	hsqldbVersion        = "2.4.1"
-	jackson2Version      = "2.9.7"
+	jackson2Version      = "2.9.8"
 	jettyVersion         = "9.4.14.v20181114"
 	junitJupiterVersion  = "5.0.3"
 	junitPlatformVersion = "1.0.3"

spring-aspects/spring-aspects.gradle

@@ -80,8 +80,8 @@ compileTestJava {
 
 dependencies {
 	aspects(project(":spring-orm"))
-	ajc("org.aspectj:aspectjtools:1.9.1")  // for JDK 9+ build compatibility
-	rt("org.aspectj:aspectjrt:1.9.1")  // for JDK 9+ build compatibility
+	ajc("org.aspectj:aspectjtools:1.9.2")  // for JDK 9+ build compatibility
+	rt("org.aspectj:aspectjrt:1.9.2")  // for JDK 9+ build compatibility
 	compile("org.aspectj:aspectjweaver:${aspectjVersion}")  // for Maven POM exposure
 	optional(project(":spring-aop"))  // for @Async support
 	optional(project(":spring-beans"))  // for @Configurable support