[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 3add3287):

 Replying to [comment:4 ryandesign]:
 > There are a couple dozen ports that depend on exiv2. I only checked a
 handful of them on December 28, but half of those I checked did not build
 with this new version and need patches

 Considering the newer version(s) include several fixes for security
 related bugs, including three CVE and one of those being a out of bounds
 write problem it seems sticking with an older exiv2 version is not a good
 idea. Breaking ports b/c they still can't be build against a newer version
 of one of their dependencies is something that I'd argue should be
 avoided. However, exposing ports that depend on exiv2 and are not broken
 to documented security bugs in exiv2 b/c the exiv2 port isn't updated
 seems worse to me. That not only many ports depend on exiv2 IMHO
 highlights the exposure a older version with known security bugs creates.

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Ticket URL: <https://trac.macports.org/ticket/68991#comment:8>
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