Update to latest parent pom

git-svn-id: https://svn.apache.org/repos/asf/maven/continuum/trunk@577328 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 64f4755..0d07f7b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven-parent</artifactId>
-    <version>5</version>
+    <version>6</version>
     <relativePath>../pom/maven/pom.xml</relativePath>
   </parent>
   <groupId>org.apache.maven.continuum</groupId>