[Snyk] Security upgrade postcss-cli from 4.1.1 to 8.0.0#23

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snyk-bot wants to merge 1 commit intov4-devfrom snyk-fix-ba451e1edfb85e76725df7b83cee1c22

+700-203

Commits on Nov 18, 2020

fix: package.json & package-lock.json to reduce vulnerabilities
snyk-bot
committed