RFR: 8318984: Update to Xcode 14.3.1 on macOS

[Kevin Rushforth]

This PR updates the micro version of the compiler on macOS to 14.3.1 (from 14.3) to match JDK 22.

I've run headless and headful tests.

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Commit messages:
 - 8318984: Update to Xcode 14.3.1 on macOS

Changes: https://git.openjdk.org/jfx/pull/1284/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1284&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8318984
  Stats: 5 lines in 3 files changed: 0 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jfx/pull/1284.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1284/head:pull/1284

PR: https://git.openjdk.org/jfx/pull/1284