DSP-19208 update spray-json to 1.3.5

Author: alexoss68

project/Versions.scala

@@ -6,7 +6,7 @@ object Versions {
   lazy val jodaConvert = "1.8.1"
   lazy val akka = "2.3.15"
   lazy val spray = "1.3.3"
-  lazy val sprayJson = "1.3.2"
+  lazy val sprayJson = "1.3.5"
   lazy val spark = "2.0.2"
   lazy val mesos = "1.0.0-2.0.89.ubuntu1404"
   lazy val netty =  "4.0.29.Final"