RFR: 8288499: Restore cancel-in-progress in GHA

[Aleksey Shipilev]

On Wed, 15 Jun 2022 15:20:29 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

> I accidentally changed the behavior in GHA wrt multiple runs from the same branch. The old solution used `cancel-in-progress: true` which means that an old batch was cancelled when a new commit was pushed to the branch.
> 
> I think this is a good behavior, since it minimizes wait times for GHA results, and wastes less GHA resources.
> 
> I changed this to `false` while developing the new GHA framework, and intended to change it back before pushing, but forgot about it.

Whoops. Looks good.

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Marked as reviewed by shade (Reviewer).

PR: https://git.openjdk.org/jdk/pull/9170