Update javancss-maven-plugin 2.0 -> 2.1.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1721775 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

pom.xml

@@ -302,7 +302,7 @@ CSV files of various types.
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>javancss-maven-plugin</artifactId>
-        <version>2.0</version>
+        <version>2.1</version>
       </plugin>
 
       <!-- We need to add our test data files to rat exclusions -->