Update checkstyle version

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1592598 13f79535-47bb-0310-9956-ffa450edef68
Fix checkstyle error

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1592600 13f79535-47bb-0310-9956-ffa450edef68