bump actions/upload-artifact from 4 to 7 (#540)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/v4...v7)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/agent-image-smoke.yml

@@ -176,7 +176,7 @@ jobs:
           } | tee -a /tmp/smoke-report.md
 
       - name: Upload panel screenshot artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: ux-qa-panel-screenshot
           path: /tmp/pw-artifacts/ux-qa-panel-login.png