use more recent enforcer plugin

Author: jdcasey

pom.xml

@@ -61,7 +61,7 @@
     <version.plugin.plugin>3.2</version.plugin.plugin>
     <version.plugin.plexus-component-metadata>1.5.5</version.plugin.plexus-component-metadata>
     <version.plugin.release>2.5</version.plugin.release>
-    <version.plugin.enforcer>1.0</version.plugin.enforcer>
+    <version.plugin.enforcer>1.4</version.plugin.enforcer>
     <version.plugin.assembly>2.3</version.plugin.assembly>
     <version.plugin.jar>2.4</version.plugin.jar>
     <version.plugin.source>2.1.2</version.plugin.source>