fix(package): update raven to version 2.6.4 (#6127)
fix(package): update raven to version 2.6.4 (#6127)


aviarypl/mozilla-l10n-addons-frontend,kumar303/addons-frontend,aviarypl/mozilla-l10n-addons-frontend,kumar303/addons-frontend,tsl143/addons-frontend,aviarypl/mozilla-l10n-addons-frontend,aviarypl/mozilla-l10n-addons-frontend,tsl143/addons-frontend,mozilla/addons-frontend,tsl143/addons-frontend,mozilla/addons-frontend,mozilla/addons-frontend,mozilla/addons-frontend,kumar303/addons-frontend,tsl143/addons-frontend,kumar303/addons-frontend