[Snyk] Security upgrade react-scripts from 3.4.3 to 4.0.0#1

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-be250de0532aefb1b9cc36abbeb5ae5f

+11,697-7,573

Commits on May 27, 2021

fix: developers.diem.com/diem-cli/package.json & developers.diem.com/diem-cli/package-lock.json to reduce vulnerabilities
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