RAT-216: Upgrading maven-enforcer-rules

* Fixes strange NPE when using latest ASF parent pom 18



git-svn-id: https://svn.apache.org/repos/asf/creadur/rat/trunk@1757755 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 3bb2c8a..4b237bc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -457,7 +457,7 @@
           <dependency>
             <groupId>org.codehaus.mojo</groupId>
             <artifactId>extra-enforcer-rules</artifactId>
-            <version>1.0-beta-2</version>
+            <version>1.0-beta-5</version>
           </dependency>
         </dependencies>
       </plugin>