[Snyk] Security upgrade react-scripts from 4.0.3 to 5.0.0#1

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-17b1763dfc37dcd70a103fec01f1192d

Commits on Dec 24, 2021

fix: explorer/package.json & explorer/package-lock.json to reduce vulnerabilities
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