chore(package): update karma-mocha-reporter to version 2.2.3 (#2104)
chore(package): update karma-mocha-reporter to version 2.2.3 (#2104)

https://greenkeeper.io/
aviarypl/mozilla-l10n-addons-frontend,mozilla/addons-frontend,kumar303/addons-frontend,mozilla/addons-frontend,tsl143/addons-frontend,mozilla/addons-frontend,kumar303/addons-frontend,kumar303/addons-frontend,kumar303/addons-frontend,tsl143/addons-frontend,mozilla/addons-frontend,tsl143/addons-frontend,aviarypl/mozilla-l10n-addons-frontend,tsl143/addons-frontend,aviarypl/mozilla-l10n-addons-frontend,aviarypl/mozilla-l10n-addons-frontend