[MacPorts] #55446: gnucash-devel: update to version 2.7.2, modernize dependencies

[MacPorts]

#55446: gnucash-devel: update to version 2.7.2, modernize dependencies
----------------------------+----------------------
  Reporter:  dbevans        |      Owner:  drkp
      Type:  update         |     Status:  accepted
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:
Resolution:                 |   Keywords:
      Port:  gnucash-devel  |
----------------------------+----------------------
Changes (by drkp):

 * status:  new => accepted


Comment:

 I've been working on this and have made some progress, but don't have a
 working port yet...

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Ticket URL: <https://trac.macports.org/ticket/55446#comment:1>
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