[jdk11u-dev] RFR: 8318039: GHA: Bump macOS and Xcode versions

[duke]

On Fri, 5 Jul 2024 07:14:05 GMT, Antonio Vieiro <duke at openjdk.org> wrote:

> A backport of [JDK-8318039](https://bugs.openjdk.org/browse/JDK-8318039) to update GHA to the newest macos/XCode versions.
> 
> This in preparation of  [JDK-8296812](https://bugs.openjdk.org/browse/JDK-8296812) (i.e., all macos builds that are currently hanging now will fail until JDK-8296812 is in place).

@vieiro 
Your change (at version 6f2cc58362a4099da0ea3d79bd7853f1261ddb7d) is now ready to be sponsored by a Committer.

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PR Comment: https://git.openjdk.org/jdk11u-dev/pull/2835#issuecomment-2212345901