Merge pull request #289 from intercom/seanhealy/updateJackson

Update Jackson to 2.9.10

Author: SeanHealy33

build.gradle

@@ -34,7 +34,7 @@ subprojects {
   }
 
   ext {
-    jacksonVersion = '2.9.6'
+    jacksonVersion = '2.9.10'
     powermockVersion = '1.6.6'
   }