use last parent pom

git-svn-id: https://svn.apache.org/repos/asf/maven/ant-tasks/trunk@1437788 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 3c65286..0cc494c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -25,7 +25,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven-parent</artifactId>
-    <version>22</version>
+    <version>23</version>
   </parent>
 
   <groupId>org.apache.maven</groupId>