[Snyk] Security upgrade nginx from 1.22.1-alpine to 1.24-alpine

[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

• proxy/Dockerfile

We recommend upgrading to nginx:1.24-alpine, as this image has only 7 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
	221	CVE-2023-28321 SNYK-ALPINE317-CURL-5561313	No Known Exploit
	300	Double Free SNYK-ALPINE317-LIBXML2-5417848	No Known Exploit
	300	NULL Pointer Dereference SNYK-ALPINE317-LIBXML2-5417849	No Known Exploit
	300	Out-of-bounds Read SNYK-ALPINE317-OPENSSL-5438697	No Known Exploit
	300	Out-of-bounds Read SNYK-ALPINE317-OPENSSL-5438697	No Known Exploit

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