[Snyk] Security upgrade webpack from 3.12.0 to 4.0.0#275

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-7fcc4ecfdccbedbe0dd232ec37f2b0b3

+1-1

Commits on Apr 7, 2022

fix: app/polymer/package.json to reduce vulnerabilities
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