security/openssh-portable: Update to 9.9p2

Changes: https://www.openssh.com/releasenotes.html
Security:
  * Fix CVE-2025-26465 - ssh(1) in OpenSSH versions 6.8p1 to 9.9p1
    (inclusive) contained a logic error that allowed an on-path
    attacker (a.k.a MITM) to impersonate any server when the
    VerifyHostKeyDNS option is enabled. This option is off by default.

  * Fix CVE-2025-26466 - sshd(8) in OpenSSH versions 9.5p1 to 9.9p1
    (inclusive) is vulnerable to a memory/CPU denial-of-service related
    to the handling of SSH2_MSG_PING packets. This condition may be