[MacPorts] #68991: exiv2: Update to 0.28.1

[MacPorts]

#68991: exiv2: Update to 0.28.1
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  Reporter:  alchymy  |      Owner:  ryandesign
      Type:  update   |     Status:  accepted
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  exiv2    |
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Comment (by alchymy):

 Thanks!

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Ticket URL: <https://trac.macports.org/ticket/68991#comment:3>
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