Cancel outdated workflow runs.

[mshima]

Related to #15205 and #14566.

Using group name as worflowName-${{ github.head_ref || (github.ref == 'refs/heads/main' && github.sha) || github.ref }}.
PRs should resolve as worflowName-refs/heads/branchName
Push events to main should resolve as worflowName-commitHash, so will not cancel running workflows.
Push events to others branches should resolve as worflowName-refs/heads/branchName.

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Please make sure the below checklist is followed for Pull Requests.

• All continuous integration tests are green
• Tests are added where necessary
• The JDL part is updated if necessary
• jhipster-online is updated if necessary
• Documentation is added/updated where necessary
• Coding Rules & Commit Guidelines as per our CONTRIBUTING.md document are followed

When you are still working on the PR, consider converting it to Draft (bellow reviewers) and adding skip-ci label, you can still see CI build result at your branch.

[mshima]

I will try to enable for branches others than main later.
Is working great for PRs.

[deepu105]

@mshima I dont get your comment in PR description, on newer commits it should cancel older workflows right? even running ones as the new commit is what matters

[mshima]

If we merge 5 PRs at once like we always do, only the last will complete. If that one fails, we will have to manually run every other PR merged at the same time.
@deepu105 IMO a push to main must always complete the workflows, so we don't need to bisect after.

As it is now, this PR cancels every push/pr outdated workflows runs except a push to main branch.

[deepu105]

Yes agree for main but for PR builds I think the last commit would be enough and all others can cancel even if running

[mshima]

It will cancel every push/PRs except push to main.