[Snyk] Security upgrade python from 3.13.0a3-alpine to 3.13.0a4-alpine

[rwlxxvii]

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

• devops-tools/fastapi/other-examples/fastapi-with-postgres-example/src/Dockerfile

We recommend upgrading to python:3.13.0a4-alpine, as this image has only 0 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
	514	Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion') SNYK-ALPINE319-EXPAT-6241037	No Known Exploit
	614	Resource Exhaustion SNYK-ALPINE319-EXPAT-6241038	No Known Exploit

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