[jdk20] RFR: 8299693: Change to Xcode12.4+1.1 devkit for building on macOS at Oracle

Mon Jan 9 22:36:22 UTC 2023

This pull request contains a clean backport of commit [4b6809b9](https://github.com/openjdk/jdk/commit/4b6809b94a09871712df7a1c51b7192adbe2093b) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

The commit being backported was authored by Mikael Vidstedt on 5 Jan 2023 and was reviewed by David Holmes and Erik Joelsson.

-------------

Commit messages:
 - Backport 4b6809b94a09871712df7a1c51b7192adbe2093b

Changes: https://git.openjdk.org/jdk20/pull/91/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk20&pr=91&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8299693
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk20/pull/91.diff
  Fetch: git fetch https://git.openjdk.org/jdk20 pull/91/head:pull/91

PR: https://git.openjdk.org/jdk20/pull/91