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

[MacPorts]

#59429: ocaml: Update to 4.09.0 and fix livecheck
------------------------+----------------------
 Reporter:  ryandesign  |      Owner:  pmetzger
     Type:  update      |     Status:  assigned
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:
 Keywords:              |       Port:  ocaml
------------------------+----------------------
 According to the [https://ocaml.org/docs/install.html web site]

 > The latest version of OCaml is 4.09.0.

 But `port livecheck ocaml` doesn't identify that:

 {{{
 $ port livecheck ocaml
 Error: livecheck failed for ocaml: extracted version '4.06.0' is older
 than livecheck.version '4.08.1'
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/59429>
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