[Snyk] Security upgrade react-scripts from 3.4.3 to 4.0.0#19

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snoodleboot wants to merge 1 commit intomainfrom snyk-fix-814fab01e53181877ae7a21dc4b16efe

+11,562-7,366

Commits on Mar 15, 2021

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