Bump actions/upload-artifact from 4.5.0 to 4.6.0

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4.5.0 to 4.6.0.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4.5.0...v4.6.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/urlchecker-pr-label.yml

@@ -47,7 +47,7 @@ jobs:
     # In case of failure, upload results as artifacts
     - name: Archive URL checking results
       if: failure()
-      uses: actions/upload-artifact@v4.5.0
+      uses: actions/upload-artifact@v4.6.0
       with:
         name: urlchecker-results
         path: urls.csv