Update UK2 (#3845)
Update UK2 (#3845)

UK2 now supports Software or SMS authentication.
NB: Documentation is outdated, and only refers to SMS authentication. Unable to locate any newer documentation.
bjorno/twofactorauth,rj175/twofactorauth,Jawshy/twofactorauth,Nitrokey/dongleauth,Nitrokey/dongleauth,jdavis/twofactorauth,vgarmash/twofactorauth,Jawshy/twofactorauth,jdavis/twofactorauth,jdavis/twofactorauth,Jawshy/twofactorauth,rj175/twofactorauth,rj175/twofactorauth,Jawshy/twofactorauth,Nitrokey/dongleauth,vgarmash/twofactorauth,bjorno/twofactorauth,bjorno/twofactorauth,vgarmash/twofactorauth