ci: update version in k8s manifests and skip flaky TestSetLogLevelFleetManaged

[pkoutsovasilis]

What does this PR do?

Updates the k8s version to the correct one, and skips TestSetLogLevelFleetManaged to make our CI more robust

Why is it important?

We always need a robust CI

Checklist

• I have read and understood the pull request guidelines of this project.
• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have made corresponding change to the default configuration files
• I have added tests that prove my fix is effective or that my feature works
• I have added an entry in ./changelog/fragments using the changelog tool
• I have added an integration test or an E2E test

Disruptive User Impact

How to test this PR locally

Related issues

• Relates [Flaky Test]: TestSetLogLevelFleetManaged – agent never communicated agent-specific log level "debug" to Fleet #5193

[elasticmachine]

Pinging @elastic/elastic-agent-control-plane (Team:Elastic-Agent-Control-Plane)

[elastic-sonarqube]

Quality Gate passed

Issues
0 New issues
0 Fixed issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarQube