[MacPorts] #45679: bsdowl: Update to v2.2.1

[MacPorts]

#45679: bsdowl: Update to v2.2.1
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  Reporter:  michipili@…  |      Owner:  ryandesign@…
      Type:  update       |     Status:  closed
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:  fixed        |   Keywords:  haspatch maintainer
      Port:  bsdowl       |
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Comment (by ryandesign@…):

 And then I realized one of the changes in 2.2.1 is:

 > [https://github.com/michipili/bsdowl/issues/41 #41] Command mp2png is
 now implemented using GraphicsMagick

 So GraphicsMagick is a runtime dependency as well, and not just a build
 dependency. So that makes it a library dependency. Changed in r129879.

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Ticket URL: <https://trac.macports.org/ticket/45679#comment:12>
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