[MacPorts] #36916: Added missing dependency

[MacPorts]

#36916: Added missing dependency
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 Reporter:  rod@…   |      Owner:  macports-tickets@…
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.1.2
 Keywords:          |       Port:  thieriot
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 Just noticed there's a missing dependency (p5-libwww-perl), and also the
 p5-yaml and p5-json deps don't need to be perl version specific.

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Ticket URL: <https://trac.macports.org/ticket/36916>
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