[Snyk] Security upgrade node from 14.9-alpine to 14.21.0-alpine

[nr-security-github]

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


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.validator

We recommend upgrading to node:14.21.0-alpine, as this image has only 11 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
	HTTP Request Smuggling SNYK-UPSTREAM-NODE-1055465	721
	Privilege Escalation SNYK-UPSTREAM-NODE-1315789	721
	Infinite loop SNYK-UPSTREAM-NODE-5811867	721
	Buffer Overflow SNYK-ALPINE311-OPENSSL-1569451	714
	Out-of-bounds Write SNYK-ALPINE311-ZLIB-2977081	714

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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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