RFR: 7903736: Update GitHub actions used in jtreg's workflows

Tue May 28 20:27:15 UTC 2024

On Fri, 24 May 2024 10:49:55 GMT, Christian Stein <cstein at openjdk.org> wrote:

> Please review this change to use Oracle's `setup-java` action in `jtreg` workflows. The `oracle-actions/setup-java` action will take care of delegating to up-to-date actions, such as `actions/setup-java`.

I'm not an expert on actions, and even less so on Oracle actions, but the changes seem reasonable

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Marked as reviewed by jjg (Lead).

PR Review: https://git.openjdk.org/jtreg/pull/197#pullrequestreview-2083786514