Update cachetools to 4.0.0 (#13117)
Update cachetools to 4.0.0 (#13117)

Update cachetools to 4.0.0
eviljeff/olympia,diox/olympia,mozilla/addons-server,bqbn/addons-server,wagnerand/addons-server,mozilla/olympia,wagnerand/addons-server,eviljeff/olympia,bqbn/addons-server,diox/olympia,mozilla/olympia,diox/olympia,diox/olympia,bqbn/addons-server,mozilla/olympia,bqbn/addons-server,mozilla/addons-server,eviljeff/olympia,wagnerand/addons-server,wagnerand/addons-server,mozilla/olympia,eviljeff/olympia,mozilla/addons-server,mozilla/addons-server