chore(actions)(deps): bump actions/upload-artifact from 4.4.0 to 6.0.0 (SylphxAI#248)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4.4.0 to 6.0.0.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4.4.0...v6.0.0)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: 6.0.0
  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>
Co-authored-by: Kyle Tse <shtse8@gmail.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -53,7 +53,7 @@ jobs:
           token: ${{ secrets.CODECOV_TOKEN }}
 
       - name: Upload coverage reports
-        uses: actions/upload-artifact@v4.4.0
+        uses: actions/upload-artifact@v6.0.0
         with:
           name: coverage-report
           path: coverage/