[MacPorts] #66819: go 1.20.0 doesn't build on High Sierra

[MacPorts]

#66819: go 1.20.0 doesn't build on High Sierra
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  Reporter:  blair   |      Owner:  ci42
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  go      |
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Comment (by blair):

 What's the diff between your PR and the commit that upgraded to 1.20? Can
 you rebase your PR on the current HEAD?

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Ticket URL: <https://trac.macports.org/ticket/66819#comment:3>
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