chore(deps): bump actions/upload-artifact from 5 to 6 (#6416)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/v5...v6)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '6'
  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/tests.yml

@@ -142,7 +142,7 @@ jobs:
     - name: Run Playwright tests
       run: |
         xvfb-run npm run test:e2e
-    - uses: actions/upload-artifact@v5
+    - uses: actions/upload-artifact@v6
       if: ${{ !cancelled() }}
       with:
         name: playwright-report