Upgrade Log4j to 2.25.3

[Yeikel Santana (yeikel)]

Fixes CVE-2025-68161

Closes #910

Problem

The project is vulnerable to CVE-2025-68161

Solution

Upgrade to the latest version which is not vulnerable

Does this solution apply anywhere else?

• yes
• no

Test Strategy

Testing done:

• Unit tests
• Integration tests
• System tests
• Manual tests

[confluent-cla-assistant]

🎉 All Contributor License Agreements have been signed. Ready to merge.
✅ yeikel
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