[Snyk] Security upgrade express from 4.17.1 to 4.21.2#262

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luvi wants to merge 1 commit intomasterfrom snyk-fix-83107739eb650321d89dfadf4339a967

+862-309

Commits on Dec 11, 2024

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