[MacPorts] #58543: demeter @0.9.25_3: update Perl version to 5.28

[MacPorts]

#58543: demeter @0.9.25_3: update Perl version to 5.28
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  Reporter:  joefowler  |      Owner:  joefowler
      Type:  update     |     Status:  closed
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:  fixed      |   Keywords:  has patch maintainer
      Port:  demeter    |
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Comment (by chrstphrchvz):

 Also note that Perl 5.30 should be arriving in MacPorts soon, in case
 you're interested: https://github.com/macports/macports-ports/pull/4498

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Ticket URL: <https://trac.macports.org/ticket/58543#comment:5>
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