[Snyk] Security upgrade node from 18.20.3-slim to 18.20.6-slim

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Snyk has created this PR to fix 5 vulnerabilities in the dockerfile dependencies of this project.

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

Snyk changed the following file(s):

• Dockerfile

We recommend upgrading to node:18.20.6-slim, as this image has only 37 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected.

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Directory Traversal SNYK-UPSTREAM-NODE-8651420	686
	Missing Release of Memory after Effective Lifetime SNYK-UPSTREAM-NODE-8670156	586
	Integer Overflow or Wraparound SNYK-DEBIAN12-ZLIB-6008963	500
	Improper Control of Generation of Code ('Code Injection') SNYK-UPSTREAM-NODE-7430900	300
	Access Restriction Bypass SNYK-UPSTREAM-NODE-7430905	300

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Important

• Check the changes in this PR to ensure they won't cause issues with your project.
• Max score is 1000. Note that the real score may have changed since the PR was raised.
• This PR was automatically created by Snyk using the credentials of a real user.

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Learn how to fix vulnerabilities with free interactive lessons:

🦉 Directory Traversal
🦉 Missing Release of Memory after Effective Lifetime
🦉 Improper Control of Generation of Code ('Code Injection')
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