Update U2F security key for Duo authentication

Effective Feb. 1, when you log into Duo Security at NC State with a U2F security key, you will see a popup message in the Duo prompt that requests you to update your security key. Duo now supports WebAuthen, which necessitates the update.

For more information, see I am being prompted to update my U2F security key with Duo. You must log in with your Unity ID and password to view this information.