Upgraded jackson to 2.9.7

oliemansm · oliemansm · commit 4ab1a96ba1ee · 2018-11-08T20:18:15.000+01:00
diff --git a/gradle.properties b/gradle.properties
@@ -2,4 +2,4 @@ version = 7.0.0-SNAPSHOT
 group = com.graphql-java-kickstart
 
 LIB_GRAPHQL_JAVA_VER = 11.0
-LIB_JACKSON_VER = 2.8.11
+LIB_JACKSON_VER = 2.9.7
