[Snyk] Security upgrade stylelint from 9.5.0 to 13.0.0#15

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snyk-bot wants to merge 1 commit intov4-devfrom snyk-fix-b9dda5d1e6f37c6d574959df5aafb107

+1,572-502

Commits on Mar 20, 2020

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