Update pytest-xdist to 1.30.0 (#12691)
Update pytest-xdist to 1.30.0 (#12691)

Update pytest-xdist to 1.30.0
mozilla/addons-server,diox/olympia,mozilla/olympia,mozilla/addons-server,bqbn/addons-server,mozilla/olympia,mozilla/addons-server,wagnerand/addons-server,eviljeff/olympia,eviljeff/olympia,diox/olympia,eviljeff/olympia,bqbn/addons-server,bqbn/addons-server,wagnerand/addons-server,mozilla/addons-server,diox/olympia,bqbn/addons-server,mozilla/olympia,wagnerand/addons-server,eviljeff/olympia,wagnerand/addons-server,diox/olympia,mozilla/olympia