[Snyk] Security upgrade yargs from 12.0.5 to 13.1.0#19

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-5387d31eec131ed7257e78e183a5453d

+68-37

Commits on Mar 19, 2020

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