Update terminal-notifier to cross-platform binary

[feederbox826]

as noted in #5527, terminal-notifier hasn't been updated to support apple silicon. This leaves us few alternatives, which are as follows

NSUserNotification (terminal-notifier)

• Deprecated since macos 10.8-11.0
• also used by macos-notifications (py)
• can be accessed via direct C interface

UNUserNotificationCenter (replacement)

• needs signing/ notarization ^1 https://www.github.com/bitcoin-core/gui/issues/112#issue-728786599 ^2 https://qt-project.atlassian.net/browse/QTBUG-135914
• require authorization request-grant loop

AppleScript via osascript

display notification

• no icon override
  • unless packaged as an Application??
• no follow-through when icon is clicked, only dismissal
• used by beeep

JXA

• used by go-mac-notifier
• has some unofficial documentation
• requires manual permission grant

growl

• retired and only works for intel

[feederbox826]

As a note, Notifiarr has a signed binary for terminal-notifier Notifiarr/notifiarr@eec162e#diff-d78234a3ec067d617f01d228b423f705f1becfb2ccf92c2beb2fa99fb29c376f

that we can simply copy over and use as a stopgap