ssh: Update to OpenSSH 9.5p1
Excerpts from the release notes:
Potentially incompatible changes
- ssh-keygen(1): generate Ed25519 keys by default. [NOTE: This change was already merged into FreeBSD.]
- sshd(8): the Subsystem directive now accurately preserves quoting of subsystem commands and arguments.
New features
- ssh(1): add keystroke timing obfuscation to the client.
- ssh(1), sshd(8): Introduce a transport-level ping facility.
- sshd(8): allow override of Sybsystem directives in sshd Match blocks.
Full release notes at https://www.openssh.com/txt/release-9.5
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
(cherry picked from commit edf8578117e8844e02c0121147f45e4609b30680)