fix: upgrade express from 4.16.4 to 4.21.2

Snyk has created this PR to upgrade express from 4.16.4 to 4.21.2.

See this package in npm:
express

See this project in Snyk:
https://app.snyk.io/org/nexuscompute/project/75b76a42-1a11-4113-9886-612a3cb90f61?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot