use last 3.1 version

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1357120 13f79535-47bb-0310-9956-ffa450edef68
1 file changed
tree: 5079ccd39c7600c3b1f085cc429a8aa95dec2964
  1. src/
  2. pom.xml