[Snyk] Security upgrade ubuntu from mantic to 23.10

[Ravenwater]

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

• docker/Dockerfile.clang12

We recommend upgrading to ubuntu:23.10, as this image has only 6 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	Out-of-bounds Write SNYK-UBUNTU2310-GLIBC-6219667	No Known Exploit
	621	Out-of-bounds Write SNYK-UBUNTU2310-GLIBC-6219685	Proof of Concept
	621	Out-of-bounds Write SNYK-UBUNTU2310-GLIBC-6219685	Proof of Concept
	514	Incorrect Calculation of Buffer Size SNYK-UBUNTU2310-GLIBC-6219703	No Known Exploit
	514	Incorrect Calculation of Buffer Size SNYK-UBUNTU2310-GLIBC-6219703	No Known Exploit

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