[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.clang11

We recommend upgrading to ubuntu:23.10, as this image has only 7 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
	586	CVE-2024-2961 SNYK-UBUNTU2310-GLIBC-6663158	No Known Exploit
	586	CVE-2024-2961 SNYK-UBUNTU2310-GLIBC-6663158	No Known Exploit
	300	Information Exposure SNYK-UBUNTU2310-LIBGCRYPT20-6411453	No Known Exploit
	150	CVE-2023-7008 SNYK-UBUNTU2310-SYSTEMD-6137858	No Known Exploit
	300	CVE-2020-22916 SNYK-UBUNTU2310-XZUTILS-5988806	No Known Exploit

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