[Snyk] Security upgrade webpack-dev-server from 3.11.3 to 4.7.3#34

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-24c1f7daf33b6abc0983f2e787e28d16

+1-1

Commits on Mar 20, 2022

fix: packages/docusaurus/package.json to reduce vulnerabilities
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