[MacPorts] #69334: Update simplekml to newer python

[MacPorts]

#69334: Update simplekml to newer python
---------------------------+--------------------
  Reporter:  dershow       |      Owner:  (none)
      Type:  update        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:  py-simplekml  |
---------------------------+--------------------
Changes (by dershow):

 * Attachment "Portfile" added.

 Portfile for newer python

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Ticket URL: <https://trac.macports.org/ticket/69334>
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