MLE-23629: add new High and Critical CVE(s) in Known Issues under Readme for 2.2.2 release

[barkhachoithani]

Description

Checklist:

• Owner:

• JIRA_ID as part of branch/PR name

• Rebase the branch with upstream

• Squashed all commits into a single commit

• Added Tests

• Reviewer:

• Reviewed Tests

• Added to Release Wiki/Jira

[Copilot]

Pull Request Overview

This PR updates the Known Issues section in the README to add new High and Critical CVEs for the 2.2.2 release. The changes include adding additional CVE references to existing packages and introducing new packages with their associated CVEs.

• Adds numerous additional CVE references to the libdb-utils package
• Introduces three new packages (libcroco, libxml2, and systemd) with their respective CVEs
• Reformats the libdb-utils CVE list to improve readability

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}