[MacPorts] #64207: py-nio: Update

[MacPorts]

#64207: py-nio: Update
------------------------+----------------------
 Reporter:  ryandesign  |      Owner:  petrrr
     Type:  update      |     Status:  assigned
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.7.1
 Keywords:              |       Port:  py-nio
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 py-nio could be updated from 1.3.0b1 to the latest version, currently
 1.5.5.

 The license has changed to Apache-2.

 Livecheck needs to be fixed.

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Ticket URL: <https://trac.macports.org/ticket/64207>
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