Move custom sshd_config to /etc/ssh/sshd_config.d/

openssh 9.4p1-2 changed /etc/ssh/sshd_config to add support for
drop-in files in /etc/ssh/sshd_config.d/.

Using drop-in files avoids needing to keep up with changes to the
default /etc/ssh/sshd_config.

CHANGELOG.rst

@@ -17,6 +17,7 @@ Changed
 - Mount ``/etc/pacman.d/gnupg`` on tmpfs with option ``noswap`` instead of using ramfs. This ensures there is a limit to
   the file system size.
 - Enable systemd-networkd's support for IPv6 Privacy Extensions globally instead of per-connection.
+- Moved custom ``sshd_config`` files to ``/ssh/sshd_config.d/10-archiso.conf``
 
 Deprecated
 ----------