[MacPorts] #61592: nodejs8 nodejs10 nodejs12 nodejs13 nodejs14 nodejs15: Add arm64 support

[MacPorts]

#61592: nodejs8 nodejs10 nodejs12 nodejs13 nodejs14 nodejs15: Add arm64 support
-------------------------------------------------+-------------------------
  Reporter:  shibukawa                           |      Owner:  ci42
      Type:  defect                              |     Status:  assigned
  Priority:  Normal                              |  Milestone:
 Component:  ports                               |    Version:  2.6.4
Resolution:                                      |   Keywords:  arm64
      Port:  nodejs8 nodejs10 nodejs12 nodejs13  |
  nodejs14 nodejs15                              |
-------------------------------------------------+-------------------------

Comment (by hexagonal-sun):

 I've added a PR that allows nodejs15 to be built on arm64:
 [https://github.com/macports/macports-ports/pull/9381] . Built and tested
 on my machine.

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Ticket URL: <https://trac.macports.org/ticket/61592#comment:4>
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