[MacPorts] #42647: Update libupnp to 1.6.19

[MacPorts]

#42647: Update libupnp to 1.6.19
---------------------------+----------------------
  Reporter:  ctreleaven@…  |      Owner:  sfiera@…
      Type:  update        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.2.1
Resolution:                |   Keywords:  haspatch
      Port:  libupnp       |
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Comment (by ctreleaven@…):

 Ping!

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Ticket URL: <https://trac.macports.org/ticket/42647#comment:3>
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