[Snyk] Security upgrade yargs from 4.8.1 to 13.1.0#18

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-f7aa68ba623890bb93c6cebf4e03c3b8

+318-147

Commits on Mar 17, 2020

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