This will update HPN-SSH to 18.4.0 bringing it up to the OpenSSH 9.7p1 release.
Most changes are minor (and largely focused on documentation) but this version
does upgrade binn.[c|h] to the latest version. Unfortunately, this version is no longer
C-89 compatible so we've disabled the C-89 compatabilty tests in the CI regression tests.
This will update HPN-SSH to 18.4.0 bringing it up to the OpenSSH 9.7p1 release. Most changes are minor (and largely focused on documentation) but this version does upgrade binn.[c|h] to the latest version. Unfortunately, this version is no longer C-89 compatible so we've disabled the C-89 compatabilty tests in the CI regression tests.