[Snyk] Security upgrade npm from 6.2.0 to 6.6.0#627

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-5011f68bc29f8f4789bc5568c088869d

+707-405

Commits on Aug 17, 2021

fix: script/package.json & script/package-lock.json to reduce vulnerabilities
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