[MacPorts] #40767: mercurial: update to 2.7.2

[MacPorts]

#40767: mercurial: update to 2.7.2
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  Reporter:  nad@…      |      Owner:  deric@…
      Type:  update     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.2.0
Resolution:             |   Keywords:
      Port:  mercurial  |
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Comment (by sean@…):

 I have this in my queue to push and will hopefully get to do that in a few
 hours.

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Ticket URL: <https://trac.macports.org/ticket/40767#comment:2>
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