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

Mon Jan 9 23:29:59 UTC 2023

On Mon, 9 Jan 2023 22:26:20 GMT, Mikael Vidstedt <mikael at openjdk.org> wrote:

> 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.

Marked as reviewed by erikj (Reviewer).

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