[MacPorts] #53430: Please update swig-ruby to work with ruby-2.4

[MacPorts]

#53430: Please update swig-ruby to work with ruby-2.4
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  Reporter:  mouse07410  |      Owner:  michaelld
      Type:  update      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  swig-ruby   |
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Comment (by cooljeanius):

 actually I guess this can be closed now, since there's #57650, too

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Ticket URL: <https://trac.macports.org/ticket/53430#comment:7>
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