Add non-namespaced alias sntrup761x25519-sha512 that is being standardized

The specification is now in the last call, data point is allocated so there is
no need to stick to the namespaces alias anymore

https://datatracker.ietf.org/doc/draft-ietf-sshm-ntruprime-ssh/

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Sahana Prasad <sahana@redhat.com>

src/client.c

@@ -291,6 +291,7 @@ int dh_handshake(ssh_session session)
             break;
 #endif
 #ifdef HAVE_SNTRUP761
+        case SSH_KEX_SNTRUP761X25519_SHA512:
         case SSH_KEX_SNTRUP761X25519_SHA512_OPENSSH_COM:
             rc = ssh_client_sntrup761x25519_init(session);
             break;