maven-pmd-plugin 2.3 to 2.4.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/codec/trunk@794348 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

pom.xml

@@ -251,7 +251,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-pmd-plugin</artifactId>
-          <version>2.3</version>
+          <version>2.4</version>
         </plugin>
         <plugin>
           <groupId>org.codehaus.mojo</groupId>