RFR: 8310306: Pin msys2/setup-msys2 github action to a specific commit

[Christoph Langer]

On Mon, 19 Jun 2023 11:39:21 GMT, Jaikiran Pai <jpai at openjdk.org> wrote:

> Can I please get a review of this change which backports the fixes for https://bugs.openjdk.org/browse/JDK-8310259?
> 
> This wasn't a clean backport because this also brings in https://bugs.openjdk.org/browse/JDK-8309934 which in theory isn't a must-have change, but I think it's good to have these changes match with what's in mainline.
> 
> With this commit in this PR, the windows github actions jobs that are failing in this jdk21 repo, should now continue to pass.

Could you then please also add the issue [JDK-8309934](https://bugs.openjdk.org/browse/JDK-8309934) to this PR?

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PR Comment: https://git.openjdk.org/jdk21/pull/31#issuecomment-1597093211