Update to latest mvn-rel plugin.


git-svn-id: https://svn.apache.org/repos/asf/creadur/rat/trunk@1743417 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index f980d27..b8a903b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -376,7 +376,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-release-plugin</artifactId>
-          <version>2.5.1</version>
+          <version>2.5.3</version>
           <configuration>
             <!-- Only prompt once for the release version -->
             <autoVersionSubmodules>true</autoVersionSubmodules>