[MacPorts] #69580: keepassxc: update to 2.7.7

[MacPorts]

#69580: keepassxc: update to 2.7.7
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  Reporter:  contextnerror  |      Owner:  (none)
      Type:  update         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:
Resolution:                 |   Keywords:
      Port:  KeePassXC      |
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Comment (by reneeotten):

 the port had no maintainer so someone with enough interest (you?) can
 submit a PR.

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Ticket URL: <https://trac.macports.org/ticket/69580#comment:1>
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