fix(ci): add missing backslashes to smoke-test curl command

cloudbuild.yaml

@@ -98,11 +98,11 @@ steps:
         TOKEN=$$(gcloud auth print-identity-token 
           --audiences="$$BASE_URL")
 
-        RESPONSE=$$(curl -s -w "
-HTTP_STATUS:%{http_code}" 
-          -H "Authorization: Bearer $$TOKEN" 
-          -H "Content-Type: application/json" 
-          -d '{"user_id": "ci", "session_id": "smoke-$$BUILD_ID", "message": "ping"}' 
+        RESPONSE=$$(curl -s -w "\nHTTP_STATUS:%{http_code}" \
+          -H "Authorization: Bearer $$TOKEN" \
+          -H "Content-Type: application/json" \
+          -d '{"user_id": "ci", "session_id": "smoke-$$BUILD_ID", "message": "ping"}' \
+          "$$BASE_URL/run")
           "$$BASE_URL/run")
 
         HTTP_STATUS=$$(echo "$$RESPONSE" | grep "HTTP_STATUS:" | cut -d: -f2)