[MacPorts] #67551: gnucash: Update to 5.1

[MacPorts]

#67551: gnucash: Update to 5.1
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  Reporter:  ryandesign  |      Owner:  drkp
      Type:  update      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  gnucash     |
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Comment (by ryandesign):

 The port currently uses python310. While doing this update, please switch
 to python311 if possible.

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Ticket URL: <https://trac.macports.org/ticket/67551#comment:1>
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