Use latest changes plugin (2.0 causes NPE) - porting r992789 from trunk.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/digester/branches/1_X_LINE@992793 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 660023e..11b1cf0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -270,7 +270,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-changes-plugin</artifactId>
-        <version>2.0</version>
+        <version>2.3</version>
         <configuration>
           <issueLinkTemplate>%URL%/../%ISSUE%</issueLinkTemplate>
         </configuration>