[MacPorts] #59429: ocaml: Update to 4.09.0 and fix livecheck

[MacPorts]

#59429: ocaml: Update to 4.09.0 and fix livecheck
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  Reporter:  ryandesign  |      Owner:  pmetzger
      Type:  update      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  ocaml       |
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Comment (by pmetzger):

 The livecheck should be fixed.

 I'm reluctant to update too quickly right now. There's a ton of packages
 that just don't work under 4.09 and the important ones aren't all fixed
 yet. I've been (deliberately) slow-walking the updates. (Serious OCaml
 devs will be using opam to build their own compiler.)

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Ticket URL: <https://trac.macports.org/ticket/59429#comment:1>
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