Split https_availability audit.

[reitermarkus]

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Allow more fine-grained control for excluding audits. For example, Homebrew/homebrew-cask#163887 shouldn't use ci-skip-livecheck to skip the homepage audit when there isn't even a livecheck anymore.

[apainintheneck]

Makes sense

[bevanjkay]

Having the extra label makes sense 👍🏻

Do we need to consider some adjustments with the way deprecated/disabled casks are handled in general for auditing? Probably an AGM discussion though.

[reitermarkus]

the way deprecated/disabled casks are handled

I think we already have some handling that makes sense, e.g. ignoring livecheck for them. In this specific case with the knotes cask it's not even HTTPS availability that's the problem, but availability in general, since both HTTP and HTTPS return 503 Service Unavailable. Still worth discussing though.

[reitermarkus]

Merge together with Homebrew/homebrew-cask#163916.

[bevanjkay]

@reitermarkus I'm seeing a CI failure related to the change here - https://github.com/Homebrew/homebrew-cask/actions/runs/7440382751/job/20241842575?pr=163945#step:11:63