[Snyk] Security upgrade express from 4.14.0 to 4.21.0#70

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vutting4221 wants to merge 1 commit intomasterfrom snyk-fix-3ee23c11ac7ebc13d49a5ab544d98111

+1-1

Commits on Sep 13, 2024

fix: yarn/examples/hello_world/package.json to reduce vulnerabilities
snyk-bot
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