HEALTHZ should not be AUTH protected

[Kilowhisky]

Is your feature request related to a problem? Please describe.
As described here in the docs: https://tile38.com/commands/healthz

You should be able to just use /healthz as a readiness probe.

But if you have protected=yes (which is default) it will give...

/app $ tile38-cli healthz
{"ok":true,"elapsed":"260ns"}
/app $ curl localhost:9851/healthz
{"ok":false,"err":"authentication required","elapsed":"7.97µs"}
/app $

Describe the solution you'd like
/healthz shouldn't be protected if you have authentication turned on as its a status check.

Describe alternatives you've considered
The check can be done via a exec readiness check