use last 3.1 version

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1357122 13f79535-47bb-0310-9956-ffa450edef68
1 file changed
tree: 048231f29f5273853be43325ffc070cfc0cb7f2d
  1. src/
  2. pom.xml