Merge pull request #30 from arduino-libraries/dependabot/github_actions/dot-github/workflows/actions/upload-artifact-6

Bump actions/upload-artifact from 5 to 6 in /.github/workflows

Author: per1234

.github/workflows/sync-labels.yml

@@ -73,7 +73,7 @@ jobs:
           file-url: https://raw.githubusercontent.com/arduino/tooling-project-assets/main/workflow-templates/assets/sync-labels/${{ matrix.filename }}
 
       - name: Pass configuration files to next job via workflow artifact
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           path: ${{ matrix.filename }}
           if-no-files-found: error