[Snyk] Security upgrade nginx from mainline to 1.23.0

[snyk-bot]

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

• contrib/docker/frontend-with-nginx/Dockerfile

We recommend upgrading to nginx:1.23.0, as this image has only 93 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	Issue	Exploit Maturity
	Out-of-bounds Read SNYK-DEBIAN11-FREETYPE-2774654	No Known Exploit
	Out-of-bounds Write SNYK-DEBIAN11-FREETYPE-2774656	No Known Exploit
	Out-of-bounds Read SNYK-DEBIAN11-FREETYPE-2774664	No Known Exploit
	OS Command Injection SNYK-DEBIAN11-OPENSSL-2933518	No Known Exploit
	OS Command Injection SNYK-DEBIAN11-OPENSSL-2933518	No Known Exploit

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