[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:
      Type:  update   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  meld     |
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Comment (by elelay):

 My mistake: since you changed status to assigned I thought you would be
 working on it.

 Did you do that because it's nomaintainer?

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Ticket URL: <https://trac.macports.org/ticket/47560#comment:10>
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