[MacPorts] #60942: go: Support arm64

[MacPorts]

#60942: go: Support arm64
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  Reporter:  ryandesign   |      Owner:  ci42
      Type:  enhancement  |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  go           |
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Comment (by meme):

 As https://github.com/golang/go/issues/42684 has been closed, Go now works
 for arm64. However, it is slated for the next release and can be built
 from tip of tree or backported into a release version.

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Ticket URL: <https://trac.macports.org/ticket/60942#comment:1>
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