[MacPorts] #55460: postgis2: Update to 2.4.2

[MacPorts]

#55460: postgis2: Update to 2.4.2
-------------------------+--------------------
  Reporter:  ryandesign  |      Owner:  Veence
      Type:  update      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  postgis2    |
-------------------------+--------------------

Comment (by Veence):

 In [changeset:"70217fe70ee6dc7926cb8bfd58dc91852a762ca8/macports-ports"
 70217fe70ee6dc7926cb8bfd58dc91852a762ca8/macports-ports]:
 {{{
 #!ConfigurableCommitTicketReference repository="macports-ports"
 revision="70217fe70ee6dc7926cb8bfd58dc91852a762ca8"
 postgis2: upgrade to 2.4.2, fixes licence issue and improve Portfile
 Should fix: https://trac.macports.org/ticket/55461
 and: https://trac.macports.org/ticket/55460
 }}}

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Ticket URL: <https://trac.macports.org/ticket/55460#comment:1>
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