[Snyk] Security upgrade python from 3.9-slim to 3.12.0b1-slim

[pavelmaksimov]

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:3.12.0b1-slim, as this image has only 69 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
	150	Use of Insufficiently Random Values SNYK-DEBIAN12-GLIBC-1547135	No Known Exploit
	150	Out-of-Bounds SNYK-DEBIAN12-GLIBC-1547196	No Known Exploit
	150	Resource Management Errors SNYK-DEBIAN12-GLIBC-1547293	No Known Exploit
	150	CVE-2019-1010023 SNYK-DEBIAN12-GLIBC-1547373	No Known Exploit
	150	Out-of-bounds Write SNYK-DEBIAN12-GNUPG2-3330747	No Known Exploit

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🦉 Use of Insufficiently Random Values