bump Serverless

[pberthonneau]

Proposed changes

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Types of changes

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• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Code style update (formatting, renaming)
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• [X] Workflow change
• [ ] Documentation update (if none of the other choices apply)

Checklist

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• [X] I have read the CONTRIBUTING doc.
• [X] Lint passes locally with my changes.
• [X] I have added necessary documentation (if appropriate).
• [X] Any dependent changes have been merged and published in downstream modules

Further comments

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[pberthonneau]

@tom-halpin I'm not sure what should be the triggers but 2 runs of check links is one too many.

Maybe on: push: branches-ignore: master

[tom-halpin]

@pberthonneau given that the master branch is protected that should work as direct commits to master are prevented