[Snyk] Security upgrade ubuntu from latest to kinetic

[circleci-secops]

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

• docs/examples/apt-cacher-ng.Dockerfile

We recommend upgrading to ubuntu:kinetic, as this image has only 11 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	Out-of-bounds Write SNYK-UBUNTU2204-BASH-3098342	No Known Exploit
	150	Improper Input Validation SNYK-UBUNTU2204-COREUTILS-2801226	No Known Exploit
	364	Memory Leak SNYK-UBUNTU2204-LIBCAP2-5538282	No Known Exploit
	364	CVE-2023-2603 SNYK-UBUNTU2204-LIBCAP2-5538296	No Known Exploit
	221	Allocation of Resources Without Limits or Throttling SNYK-UBUNTU2204-OPENSSL-5661537	No Known Exploit

---

Note: You are seeing this because you or someone else with access to this repository has authorized Snyk to open fix PRs.

For more information: 🧐 View latest project report

🛠 Adjust project settings

---

Learn how to fix vulnerabilities with free interactive lessons:

🦉 Memory Leak 🦉 Allocation of Resources Without Limits or Throttling