scorecard.yml: update actions/upload-artifact to v4

Author: lisanna-dettwyler

.github/workflows/scorecard.yml

@@ -39,7 +39,7 @@ jobs:
         repo_token: ${{ secrets.SCORECARD_TOKEN }}
         publish_results: true
     - name: "Upload artifact"
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: SARIF file
         path: results.sarif