[MacPorts] #47560: meld: version bump to @3.12.3 (Portfile attached)

[MacPorts]

#47560: meld: version bump to @3.12.3 (Portfile attached)
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  Reporter:  khepler@…  |      Owner:  landonf@…
      Type:  update     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:
      Port:  meld       |
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Comment (by photor@…):

 How to force a specific gtk3 theme in macports?
 ~/.config/gtk-3.0/settings.ini seems not working.

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Ticket URL: <https://trac.macports.org/ticket/47560#comment:3>
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