crypto-policies do not support *-192-* ciphers

Issue

• I am trying to use aes-192-ctr for my customized crypto policies, but this is not working:

$ cat etc/crypto-policies/policies/ABC.pol 
--- omitt ---
ssh_cipher = AES-256-CTR AES-192-CTR AES-128-CTR
--- omitt ---

# update-crypto-policies --set ABC
Bad value of policy property: ssh_cipher - unknown list item 'AES-192-CTR'
Errors found in policy