OK, PR submitted to update MacPorts' libressl-devel to 3.8.0 here:
https://github.com/macports/macports-ports/pull/18841
CI/build bot checks passed!
It's up to someone else to merge it.
Next to submit a PR for 3.7.3 for the stable libressl MacPort.
#libressl #macports #libresslーdevel