Update to 7.7p1

• Update x509 patch to 11.3
• Remove SCTP option as it has not had a patch available since 7.2.

Changes: https://www.openssh.com/txt/release-7.7

Notable changes:

• ssh(1)/sshd(8): Drop compatibility support for some very old SSH implementations, including ssh.com <=2.* and OpenSSH <= 3.*. These versions were all released in or before 2001 and predate the final SSH RFCs. The support in question isn't necessary for RFC-compliant SSH implementations.