[Snyk] Security upgrade webpack-dev-server from 3.11.2 to 4.0.0#83

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-ca78c30627c525bf550083db5d72c385

+1-1

Commits on Sep 13, 2021

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