Update dependency less to v3.11.0
Update dependency less to v3.11.0

mozilla/addons-server,mozilla/olympia,mozilla/olympia,mozilla/addons-server,eviljeff/olympia,wagnerand/addons-server,wagnerand/addons-server,diox/olympia,eviljeff/olympia,bqbn/addons-server,bqbn/addons-server,bqbn/addons-server,diox/olympia,wagnerand/addons-server,mozilla/olympia,eviljeff/olympia,mozilla/olympia,wagnerand/addons-server,mozilla/addons-server,diox/olympia,bqbn/addons-server,diox/olympia,mozilla/addons-server,eviljeff/olympia