[Snyk] Security upgrade socket.io from 2.3.0 to 2.4.0#250

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-56efe0d1ad075366dccff7ed6e2b7853

+131-25

Commits on May 27, 2021

fix: package.json & package-lock.json to reduce vulnerabilities
snyk-bot
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