upgrade release plugin

Author: jdcasey

pom.xml

@@ -38,7 +38,7 @@
     <version.plugin.compiler>3.1</version.plugin.compiler>
     <version.plugin.plugin>3.2</version.plugin.plugin>
     <version.plugin.plexus-component-metadata>1.5.5</version.plugin.plexus-component-metadata>
-    <version.plugin.release>2.1</version.plugin.release>
+    <version.plugin.release>2.5</version.plugin.release>
     <version.plugin.enforcer>1.0</version.plugin.enforcer>
     <version.plugin.assembly>2.3</version.plugin.assembly>
     <version.plugin.jar>2.4</version.plugin.jar>