[MacPorts] #70553: scamper: Update to 20240813

[MacPorts]

#70553: scamper: Update to 20240813
----------------------------+----------------------
  Reporter:  matthewluckie  |      Owner:  (none)
      Type:  update         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.9.3
Resolution:                 |   Keywords:  haspatch
      Port:  scamper        |
----------------------------+----------------------

Comment (by matthewluckie):

 Yes please add my github handle.  I believe that HenkPoley is the github
 handle of the other maintainer.  But I am happy to maintain it by myself
 (I am the upstream author)

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Ticket URL: <https://trac.macports.org/ticket/70553#comment:3>
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