RFR: Merge openjdk/jdk:master

[Y. Srinivas Ramakrishna]

On Thu, 15 Dec 2022 17:47:55 GMT, William Kemper <wkemper at openjdk.org> wrote:

> Merge jdk+21-0. There is a small change in the generational mode to use a different API for iterating java threads to resolve a merge conflict.

Thanks for the sync!

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Marked as reviewed by ysr (Author).

PR: https://git.openjdk.org/shenandoah/pull/183