[Snyk] Security upgrade python from 3.7.10-slim-buster to 3.10.0b4-slim-buster

[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

• Dockerfile

We recommend upgrading to python:3.10.0b4-slim-buster, as this image has only 72 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	Use After Free SNYK-DEBIAN10-GLIBC-1296899	No Known Exploit
	500	Use After Free SNYK-DEBIAN10-GLIBC-1296899	No Known Exploit
	500	Integer Overflow or Wraparound SNYK-DEBIAN10-GLIBC-1315333	No Known Exploit
	500	Integer Overflow or Wraparound SNYK-DEBIAN10-GLIBC-1315333	No Known Exploit
	733	CVE-2021-3712 SNYK-DEBIAN10-OPENSSL-1569406	No Known Exploit

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[sonarcloud[bot]]

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