[MacPorts] #47266: fdupes: update to github and take maintainership

[MacPorts]

#47266: fdupes: update to github and take maintainership
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  Reporter:  lists@…  |      Owner:  macports-tickets@…
      Type:  defect   |     Status:  closed
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.3.3
Resolution:  fixed    |   Keywords:  haspatch
      Port:  fdupes   |
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Comment (by ionic@…):

 FYI: the `github PortGroup` sets a homepage, but won't override a
 previously defined value.

 So leaving it out is fine.

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Ticket URL: <https://trac.macports.org/ticket/47266#comment:3>
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