RFR: Testing GHA [v2]

[Jorn Vernee]

On Fri, 25 Mar 2022 17:03:09 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

>> Hmm, okay. I'll use that binary instead. There was no package for 20.04 for LLVM 13.0.1
>
> will not this break when `ubuntu-latest` binds to 22.04? Can we specify a specific ubuntu version?

Ah, right. I'll set the version explicitly.

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PR: https://git.openjdk.java.net/jextract/pull/6