SSH key import of sk-ecdsa results in error

[DarkestFM]

Summary

during createadmin, import of keys from GH include sk-ecdsa-sha2-nistp256@openssh.com key resulting in error

Process

generate sk ssh key of type sk-ecdsa-sha2-nistp256@openssh.com
add key to GH
import keys into maas

Current and expected result

current
{'key': ['Invalid SSH public key: Key type sk-ecdsa-sha2-nistp256@openssh.com not recognised; it should be one of: ecdsa-sha2-nistp256 ecdsa-sha2-nistp384 ecdsa-sha2-nistp521 ssh-dss ssh-ed25519 ssh-rsa']}

expected:
keys import without error