Add extra_args to trufflesecurity/trufflehog

Author: ankandrew

.github/workflows/secret-scanning.yaml

@@ -13,3 +13,5 @@ jobs:
           fetch-depth: 0
       - name: Secret Scanning
         uses: trufflesecurity/trufflehog@main
+        with:
+          extra_args: --results=verified,unknown