RFR: 8310183: Update GitHub Actions to use boot JDK for building jtreg

[Severin Gehwolf]

On Fri, 16 Jun 2023 11:14:10 GMT, Jaikiran Pai <jpai at openjdk.org> wrote:

> If that works, then perhaps we should just use that pinned version of `msys2/setup-msys2`, until we report and have this issue fixed in that package?

+1

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PR Comment: https://git.openjdk.org/jdk/pull/14507#issuecomment-1594559587