Use DECO_GITHUB_TOKEN for cross-repo checkout

Co-authored-by: Isaac

Author: pietern

.github/workflows/scan-snapshot.yml

@@ -57,6 +57,7 @@ jobs:
         with:
           repository: databricks/gh-action-scan
           ref: 3599451f16bfeaecaf4fc7dc0853bcd6d89e9ea1
+          token: ${{ secrets.DECO_GITHUB_TOKEN }}
           path: .gh-action-scan
 
       - name: Scan artifact