Remove relative path in solhint.config.js in favor of npm virtual package

[Amxx]

This will allow us to simlink solhint.config.js into the community repo without having to also ship/vendor/link the corresponding module. The dependency will take care of that.

Note: we also need to make it explicit that solhint-plugin-openzeppelin uses minimatch, otherwize it won't be correctly linked when installed recursivelly as a sub-dependency of @openzeppelin/contracts

[changeset-bot]

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Latest commit: fc84c7a

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[ernestognw]

I just made sure that the package-lock was correct. LGTM if it passes the CI