[MacPorts] #45348: gpredict perl bump and livecheck

[MacPorts]

#45348: gpredict perl bump and livecheck
----------------------------+--------------------------------
 Reporter:  mschamschula@…  |      Owner:  macports-tickets@…
     Type:  defect          |     Status:  new
 Priority:  Normal          |  Milestone:
Component:  ports           |    Version:  2.3.1
 Keywords:  haspatch        |       Port:  gpredict
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 I've updated gpredict to update the p5.12-xml-parser dependency to p5.16
 -xml-parser (#44405).

 For gpredict default sourceforge livecheck is broken. Added a functioning
 livecheck.

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Ticket URL: <https://trac.macports.org/ticket/45348>
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