[Snyk] Security upgrade python from 3.12.0b3 to 3.12.0rc3

[sajib1066]

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 python:3.12.0rc3, as this image has only 172 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
	900	Out-of-bounds Write SNYK-DEBIAN12-LIBWEBP-5893095	Mature
	900	Out-of-bounds Write SNYK-DEBIAN12-LIBWEBP-5893095	Mature
	900	Out-of-bounds Write SNYK-DEBIAN12-LIBWEBP-5893095	Mature
	900	Out-of-bounds Write SNYK-DEBIAN12-LIBWEBP-5893095	Mature
	614	NULL Pointer Dereference SNYK-DEBIAN12-LIBXML2-5747748	No Known Exploit

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