[MacPorts] #58588: Update zim to current (gtk3) version (0.68 -> 0.71.1)

[MacPorts]

#58588: Update zim to current (gtk3) version (0.68 -> 0.71.1)
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  Reporter:  kjyv    |      Owner:  (none)
      Type:  update  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.5.4
Resolution:          |   Keywords:
      Port:  zim     |
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Comment (by kjyv):

 Yeah, the gtk3 port has finally been updated. Cool. However, you don't
 depend on it and adwaita-icon-theme. AFAIR that was necessary. Maybe merge
 my Portfile and yours?

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Ticket URL: <https://trac.macports.org/ticket/58588#comment:5>
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