[8.15](backport #2382) Update upload artifacts action

[mergify]

Summary of your changes

This PR pins the upload artifacts version to v4.3.4 due to this bug and also fixes the k8s CI.

Screenshot/Data

Related Issues

Checklist

• I have added tests that prove my fix is effective or that my feature works
• I have added the necessary README/documentation (if appropriate)

Introducing a new rule?

• Generate rule metadata using this script
• Add relevant unit tests
• Generate relevant rule templates using this script, and open a PR in elastic/packages/cloud_security_posture

---

This is an automatic backport of pull request #2382 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of cb6ece0 has failed:

On branch mergify/bp/8.15/pr-2382
Your branch is up to date with 'origin/8.15'.

You are currently cherry-picking commit cb6ece0c.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   .github/actions/docker-images/action.yml

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   tests/test_environments/k8s-cloudbeat-tests/values.yaml

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[moukoublen]

Lets merge the action version freeze to 8.15 till we fix the upload artifacts issue in the latest action release (here)

[github-actions]

📊 Allure Report - 💔 Some tests failed or were broken.

Result	Count
🟥 Failed	7
🟩 Passed	190
⬜ Skipped	33