Pontoon: Update Frisian (fy-NL) localization of AMO Frontend
Pontoon: Update Frisian (fy-NL) localization of AMO Frontend

Localization authors:
- Fjoerfoks <fryskefirefox@gmail.com>

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