fix: upgrade express from 4.18.2 to 4.21.2

Snyk has created this PR to upgrade express from 4.18.2 to 4.21.2.

See this package in npm:
express

See this project in Snyk:
https://app.snyk.io/org/sammytezzy/project/504c02fd-2e04-45ae-ada1-d69d5fbc6c08?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot