[$] Debian changes OpenSSH packaging

In the wake of the XZbackdoor, the Debian project has revisited some of thepatches included in its OpenSSHpackages to improve security. The outcome of this is that the projectwill be splitting out support for Kerberos key exchange into aseparate set of packages, though not until after the Debian13("trixie") release expected next year. The impact on Debian usersshould be minimal, but it is an interesting look into the changesLinux distributions make to upstream software as well as some of thelong-term consequences of those choices.