chore(package): update eslint-config-airbnb to version 11.2.0
chore(package): update eslint-config-airbnb to version 11.2.0

https://greenkeeper.io/
kumar303/addons-frontend,tsl143/addons-frontend,mstriemer/addons-frontend,tsl143/addons-frontend,aviarypl/mozilla-l10n-addons-frontend,mstriemer/addons-frontend,mozilla/addons-frontend,squarewave/addons-frontend,kumar303/addons-frontend,muffinresearch/addons-frontend,squarewave/addons-frontend,muffinresearch/addons-frontend,muffinresearch/addons-frontend,tsl143/addons-frontend,tsl143/addons-frontend,kumar303/addons-frontend,mozilla/addons-frontend,mozilla/addons-frontend,squarewave/addons-frontend,aviarypl/mozilla-l10n-addons-frontend,jasonthomas/addons-frontend,jasonthomas/addons-frontend,jasonthomas/addons-frontend,mstriemer/addons-frontend,kumar303/addons-frontend,aviarypl/mozilla-l10n-addons-frontend,mozilla/addons-frontend,aviarypl/mozilla-l10n-addons-frontend