test(be): 멀티 스레드 개수 변경

Author: ki-met-hoon

src/backend/chat_server/src/main/java/com/jootalkpia/chat_server/service/KafkaConsumer.java

@@ -41,7 +41,7 @@ public void processMinutePrice(String kafkaMessage) {
     @KafkaListener(
             topics = "${topic.chat}",
             groupId = "${group.chat}",
-            concurrency = "5"
+            concurrency = "8"
     )
     public void processChatMessage(@Header(KafkaHeaders.RECEIVED_KEY) String channelId, String kafkaMessage) {
         try {

src/backend/state_server/src/main/java/com/jootalkpia/state_server/service/KafkaConsumer.java

@@ -22,7 +22,7 @@ public class KafkaConsumer {
     @KafkaListener(
             topics = "${topic.chat}",
             groupId = "${group.status}",
-            concurrency = "5"
+            concurrency = "8"
     )
     public void processState(String kafkaMessage) {
         ObjectMapper mapper = new ObjectMapper();