[jfx23u] RFR: 8343760: GHA: macOS / aarch64 builds depend on Xcode 14 which will be removed

[Kevin Rushforth]

Clean backport of fix to avoid spurious GHA build failures.

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Commit messages:
 - Backport d0011b21959abdcc0ee9c969e7bd5fbbccb5d4ce

Changes: https://git.openjdk.org/jfx23u/pull/30/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx23u&pr=30&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8343760
  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jfx23u/pull/30.diff
  Fetch: git fetch https://git.openjdk.org/jfx23u.git pull/30/head:pull/30

PR: https://git.openjdk.org/jfx23u/pull/30