[MacPorts] #74398: terminal-notifier: update to 3.1.0

[MacPorts]

#74398: terminal-notifier: update to 3.1.0
---------------------+-------------------------------
 Reporter:  1c383r9  |      Owner:  (none)
     Type:  update   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:
 Keywords:           |       Port:  terminal-notifier
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 The version here is outdated a bit.

 The latest version is 3.1.0 @ https://github.com/julienXX/terminal-
 notifier/releases#release-3.1.0

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Ticket URL: <https://trac.macports.org/ticket/74398>
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