[Snyk] Security upgrade webpack-dev-server from 2.9.4 to 4.0.0#37

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-c0068e4239f7dd894b1f6a9fbb0c1da2

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Commits on Aug 18, 2021

fix: packages/react-scripts/package.json to reduce vulnerabilities
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