@djm My apologies for the delay, I submitted a Pull Request to update MacPorts' OpenSSH to 9.9p1 here:
https://github.com/macports/macports-ports/pull/25861
GitHub Actions Continuous Integration checks passed.
I don't have commit access, so it's up to someone else to merge it!
I'm prepping a a submission for undeadly.org as well.