Update django to 2.2.3 (#11751)
Update django to 2.2.3 (#11751)

Update django to 2.2.3
bqbn/addons-server,mozilla/addons-server,eviljeff/olympia,diox/olympia,eviljeff/olympia,psiinon/addons-server,diox/olympia,mozilla/olympia,mozilla/olympia,mozilla/olympia,bqbn/addons-server,psiinon/addons-server,diox/olympia,bqbn/addons-server,eviljeff/olympia,psiinon/addons-server,wagnerand/addons-server,diox/olympia,wagnerand/addons-server,bqbn/addons-server,mozilla/addons-server,wagnerand/addons-server,mozilla/olympia,wagnerand/addons-server,mozilla/addons-server,mozilla/addons-server,eviljeff/olympia,psiinon/addons-server