use last build helper plugin version

git-svn-id: https://svn.apache.org/repos/asf/archiva/redback/redback-components/trunk@1462893 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index f8bbf81..b7a1ef1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -100,7 +100,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>build-helper-maven-plugin</artifactId>
-        <version>1.7</version>
+        <version>1.8</version>
         <executions>
           <execution>
             <id>attach-artifact</id>