[Snyk-local] Security upgrade webpack-dev-server from 3.1.14 to 4.7.3#11

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-8c21f5c7b1c05e90a60790d6503666e2

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Commits on Jan 24, 2022

fix: examples/preact/package.json to reduce vulnerabilities
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