[Snyk] Security upgrade ubuntu from devel to 23.10

[kevindiu]

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

• dockers/tools/cli/loadtest/Dockerfile

We recommend upgrading to ubuntu:23.10, as this image has only 8 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
	721	Out-of-bounds Write SNYK-UBUNTU2310-GLIBC-5972086	Proof of Concept
	721	Out-of-bounds Write SNYK-UBUNTU2310-GLIBC-5972086	Proof of Concept
	514	Memory Leak SNYK-UBUNTU2310-GLIBC-5972088	No Known Exploit
	586	CVE-2023-5981 SNYK-UBUNTU2310-GNUTLS28-6069047	No Known Exploit
	586	CVE-2023-47038 SNYK-UBUNTU2310-PERL-6085371	No Known Exploit

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