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: 0dac2a9de65d8a8792c87aae306a312c92fa7c01
  1. src/
  2. pom.xml