[Snyk] Security upgrade yargs from 12.0.5 to 16.0.0#25

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-cc9bdc376592a2462cdf38bc4c31cada

+78-351

Commits on Nov 19, 2020

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