feat(kafka): prod Kafka 클러스터 브로커 주소 설정

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/main/resources/application-prod.yml

@@ -55,7 +55,7 @@ spring:
 
   # Kafka Configuration (PROD)
   kafka:
-    bootstrap-servers: localhost:9092  # TODO: PROD Kafka Broker IP/PORT 설정
+    bootstrap-servers: 10.188.141.104:9092,10.188.141.105:9092,10.188.141.102:9092
     producer:
       key-serializer: org.apache.kafka.common.serialization.StringSerializer
       value-serializer: org.apache.kafka.common.serialization.StringSerializer