[Snyk] Security upgrade node from latest to 21.6.1-bookworm-slim

[fadihanna123]

This PR was automatically created by Snyk using the credentials of a real user.

Keeping your Docker base image up-to-date means you’ll benefit from security fixes in the latest version of your chosen image.

Changes included in this PR

• Dockerfile

We recommend upgrading to node:21.6.1-bookworm-slim, as this image has only 36 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected.

Some of the most important vulnerabilities in your base image include:

Severity	Priority Score / 1000	Issue	Exploit Maturity
	471	Resource Exhaustion SNYK-DEBIAN12-EXPAT-6227597	No Known Exploit
	471	Resource Exhaustion SNYK-DEBIAN12-EXPAT-6227597	No Known Exploit
	471	Out-of-bounds Write SNYK-DEBIAN12-GDKPIXBUF-6207393	No Known Exploit
	500	Integer Overflow or Wraparound SNYK-DEBIAN12-ZLIB-6008963	No Known Exploit
	500	Integer Overflow or Wraparound SNYK-DEBIAN12-ZLIB-6008963	No Known Exploit

---

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

---

Learn how to fix vulnerabilities with free interactive lessons:

🦉 Resource Exhaustion