exclude blackduck from prepare-release

Author: Jonas-Isr

.github/workflows/prepare-release.yaml

@@ -100,7 +100,7 @@ jobs:
             -f commit=${{ needs.bump-version.outputs.release-commit }}
             -f build-release-artifacts=true
             -f sign-release-artifacts=true
-            -f run-blackduck-scan=true
+            -f run-blackduck-scan=false
             -f run-security-rating=true
 
       - name: "Await CI Workflow"