[Snyk-local] Security upgrade webpack-dev-server from 3.1.14 to 4.0.0#5

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-31322a40296bc88c7c9010d44e314020

+1-1

Commits on Aug 25, 2021

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