[Snyk] Security upgrade nginx from 1.24.0 to 1.25.3

[snyk-io]

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 nginx:1.25.3, as this image has only 80 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
	500	Cleartext Transmission of Sensitive Information SNYK-DEBIAN11-CURL-3320493	No Known Exploit
	500	Cleartext Transmission of Sensitive Information SNYK-DEBIAN11-CURL-3320493	No Known Exploit
	471	Resource Exhaustion SNYK-DEBIAN11-EXPAT-6227598	No Known Exploit
	400	Improper Verification of Cryptographic Signature SNYK-DEBIAN11-GNUTLS28-6159417	No Known Exploit
	500	Integer Overflow or Wraparound SNYK-DEBIAN11-ZLIB-6008961	No Known Exploit

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[mdelaossa]

@neurosnap while testing Snyk integration we noticed this low hanging fruit to fix ~30 vulnerabilities (you can see the report here)

What do you think? Are we ok to upgrade nginx?

[neurosnap]

Looks good to me!