[MacPorts] #69668: Use matched Xcode / CLT versions on macOS 13 and macOS 14 GitHub Actions runners (was: Use newer Xcode on macOS 14 GitHub Actions runner)

[MacPorts]

#69668: Use matched Xcode / CLT versions on macOS 13 and macOS 14 GitHub Actions
runners
-----------------------------+---------------------
  Reporter:  ryandesign      |      Owner:  admin@…
      Type:  defect          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  server/hosting  |    Version:
Resolution:                  |   Keywords:
      Port:                  |
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Comment (by ryandesign):

 Similarly, the macOS 13 GitHub Actions runner has:
 {{{
 DEBUG: Xcode 15.0.1, CLT 14.3.1.0.1.1683849156
 }}}
 This mismatch causes build failures due to a MacPorts base bug in compiler
 selection; see #70143.

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Ticket URL: <https://trac.macports.org/ticket/69668#comment:5>
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