openssh: sync local ssh_config + sshd_config files with upstream 8.7p1

openssh: sync local ssh_config + sshd_config files with upstream 8.7p1

Changes are caused by the removal of deprecated options.

ChallengeResponseAuthentication was replaced by
KbdInteractiveAuthentication in the SSHv2 protocol, see
https://www.openssh.com/txt/release-8.7

Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>