update core dep to rc3-snapshot for testing

Author: cowtowncoder

pom.xml

@@ -74,7 +74,7 @@ javax.xml.datatype, javax.xml.namespace, javax.xml.parsers
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-core</artifactId>
-      <version>2.6.0-rc2</version>
+      <version>2.6.0-rc3-SNAPSHOT</version>
     </dependency>
 
     <!-- and for testing we need a few libraries