Update GitHub Actions artifact uploads to v4 to unblock ubuntu-22.04 Linux test job

[Copilot]

The Test Linux (ubuntu-22.04) workflow job failed before running project logic because GitHub now hard-fails workflows that still use deprecated actions/upload-artifact@v3. This change migrates artifact upload steps in the test workflow to the supported v4 action version.

• Root cause addressed

  • Replaced deprecated artifact upload action references in .github/workflows/tests.yml with actions/upload-artifact@v4.

• Scope of workflow changes

  • Updated upload steps used for:
    • failed test outputs
    • coverage artifacts
    • package artifacts
    • binary artifacts
    • auxiliary build/config artifacts
  • Kept step names, artifact names, and paths unchanged to preserve workflow behavior.

• Representative change

  - name: Upload tests output
    uses: actions/upload-artifact@v4
    with:
      name: tests-linux
      path: tests