fix(core): increase hash length

[sekyungk]

What's the problem this PR addresses?

I would like to resolve the hash collision issue reported here.

How did you fix it?

increase hash length

Checklist

• [x] I have read the Contributing Guide.

• [ ] I have set the packages that need to be released for my changes to be effective.

• [ ] I will check that all automated PR checks pass before the PR gets reviewed.