[Snyk] Security upgrade express from 4.16.4 to 4.21.1

[kyusu]

Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • package.json
  • package-lock.json

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	601/1000 Why? Recently disclosed, Has a fix available, CVSS 6.3	Cross-site Scripting (XSS) SNYK-JS-COOKIE-8163060	No	No Known Exploit

(*) Note that the real score may have changed since the PR was raised.

Commit messages

Package name: express

The new version differs by 250 commits.

• 8e229f9 4.21.1
• a024c8a fix(deps): cookie@0.7.1
• 7e562c6 4.21.0
• 1bcde96 fix(deps): qs@6.13.0 (#5946)
• 7d36477 fix(deps): serve-static@1.16.2 (#5951)
• 40d2d8f fix(deps): finalhandler@1.3.1
• 77ada90 Deprecate `"back"` magic string in redirects (#5935)
• 21df421 4.20.0
• 4c9ddc1 feat: upgrade to serve-static@0.16.0
• 9ebe5d5 feat: upgrade to send@0.19.0 (#5928)
• ec4a01b feat: upgrade to body-parser@1.20.3 (#5926)
• 54271f6 fix: don't render redirect values in anchor href
• 125bb74 path-to-regexp@0.1.10 (#5902)
• 2a980ad merge-descriptors@1.0.3 (#5781)
• a3e7e05 docs: specify new instructions for `question` and `discuss`
• c5addb9 deps: path-to-regexp@0.1.8 (#5603)
• e35380a docs: add @ IamLizu to the triage team (#5836)
• f5b6e67 docs: update scorecard link (#5814)
• 2177f67 docs: add OSSF Scorecard badge (#5436)
• f4bd86e Replace Appveyor windows testing with GHA (#5599)
• 2ec589c Fix Contributor Covenant link definition reference in attribution section (#5762)
• 4cf7eed remove minor version pinning from ci (#5722)
• 6d08471 📝 update people, add ctcpip to TC (#5683)
• 61421a8 skip QUERY tests for Node 21 only, still not supported (#5695)

See the full diff

Check the changes in this PR to ensure they won't cause issues with your project.

---

Note: You are seeing this because you or someone else with access to this repository has authorized Snyk to open fix PRs.

For more information:
🧐 View latest project report

🛠 Adjust project settings

📚 Read more about Snyk's upgrade and patch logic

---

Learn how to fix vulnerabilities with free interactive lessons:

🦉 Cross-site Scripting (XSS)