Update gulp-less to version 3.0.3
Update gulp-less to version 3.0.3

vazquez/build.webmaker.org,mmmavis/build.webmaker.org,mozilla/build.webmaker.org,mmmavis/build.webmaker.org,vazquez/build.webmaker.org,mozilla/participation-heartbeat,mozilla/build.webmaker.org,mozilla/participation-heartbeat