fix(waf): correct invalid curl flags in coraza integration test

- Replace 'curl -q -O-' with 'curl -s' (valid silent mode flag)
- Remove redundant fallback since only one curl call is needed
- Fixes httpbin connectivity check failure in WAF tests

scripts/coraza_integration.sh

@@ -160,7 +160,7 @@ docker run -d --name coraza-backend --network containers_default kennethreitz/ht
 echo "Waiting for httpbin backend to be ready..."
 for i in {1..20}; do
   # Check if container is running and has network connectivity
-  if docker exec charon-debug sh -c 'curl -q -O- http://coraza-backend/get 2>/dev/null || curl -s http://coraza-backend/get' >/dev/null 2>&1; then
+  if docker exec charon-debug sh -c 'curl -s http://coraza-backend/get' >/dev/null 2>&1; then
     echo "✓ httpbin backend is ready"
     break
   fi