OpenSSH: Update to 10.0p2

Full release notes are available at
https://www.openssh.com/txt/release-10.0

Selected highlights from the release notes:

Potentially-incompatible changes

- This release

OpenSSH: Update to 10.0p2

Full release notes are available at
https://www.openssh.com/txt/release-10.0

Selected highlights from the release notes:

Potentially-incompatible changes

- This release removes support for the weak DSA signature algorithm.
[This change was previously merged to FreeBSD main.]

- This release has the version number 10.0 and announces itself as
"SSH-2.0-OpenSSH_10.0". Software that naively matches versions using
patterns like "OpenSSH_1*" may be confused by this.

- sshd(8): this release removes the code responsible for the user
authentication phase of the protocol from the per-connection
sshd-session binary to a new sshd-auth binary.

Security

- sshd(8): fix the DisableForwarding directive, which was failing to
disable X11 forwarding and agent forwarding as documented.
[This change was previously merged to FreeBSD main.]

New features

- ssh(1): the hybrid post-quantum algorithm mlkem768x25519-sha256 is now
used by default for key agreement.

Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D51630

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