Update pillow to 6.2.1 (#12683)
Update pillow to 6.2.1 (#12683)

Update pillow to 6.2.1
wagnerand/addons-server,bqbn/addons-server,eviljeff/olympia,psiinon/addons-server,eviljeff/olympia,mozilla/addons-server,diox/olympia,mozilla/olympia,wagnerand/addons-server,wagnerand/addons-server,mozilla/olympia,mozilla/addons-server,mozilla/addons-server,diox/olympia,bqbn/addons-server,mozilla/olympia,psiinon/addons-server,psiinon/addons-server,diox/olympia,eviljeff/olympia,psiinon/addons-server,bqbn/addons-server,diox/olympia,wagnerand/addons-server,mozilla/addons-server,eviljeff/olympia,bqbn/addons-server,mozilla/olympia