Enable blocking on verified secrets in TruffleHog scan (#138)

Author: isaiah-grafana

.github/workflows/org-required-trufflehog.yml

@@ -24,7 +24,7 @@ jobs:
     uses: grafana/security-github-actions/.github/workflows/reusable-trufflehog.yml@main
     with:
       # Fail on verified secrets - blocking mode
-      fail-on-verified: "false"      # Block on verified secrets
+      fail-on-verified: "true"      # Block on verified secrets
       fail-on-unverified: "false"    # Don't block on unverified secrets
       runs-on: ${{ !github.event.repository.private && 'ubuntu-latest' || 'ubuntu-arm64-small' }}    # Use same runner pattern as zizmor
     secrets: inherit