[MPOM-234] upgrade apache-rat-plugin to 0.13
diff --git a/pom.xml b/pom.xml
index ba50a8f..ce67bd8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -310,7 +310,7 @@
         <plugin>
           <groupId>org.apache.rat</groupId>
           <artifactId>apache-rat-plugin</artifactId>
-          <version>0.12</version>
+          <version>0.13</version>
         </plugin>
         <plugin>
           <groupId>org.codehaus.mojo</groupId>