[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 contextnerror):

 Indeed, I have interest, but lack skill. \\
 I've tried installing myself after updating the portfile, but it fails
 with `make: *** [all] Error 2`. \\
 It seems to fail at a different percentage of progress each time, so I'm
 not sure what exactly is tripping it up. \\
 I'll attach my modified port and a log file.

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Ticket URL: <https://trac.macports.org/ticket/69580#comment:2>
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