[MacPorts] #54450: py-docker @1.8.1: Update to 2.4.2

[MacPorts]

#54450: py-docker @1.8.1: Update to 2.4.2
------------------------+----------------------
  Reporter:  zdw        |      Owner:
      Type:  update     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:  haspatch
      Port:  py-docker  |
------------------------+----------------------
Changes (by zdw):

 * Attachment "Portfile-py-docker.2.diff" added.


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Ticket URL: <https://trac.macports.org/ticket/54450>
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