Chore: CI 환경에서 Redis 추가

# Conflicts:
#	.github/workflows/backend-ci.yml

Author: joyewon0705

src/main/resources/application-test.yml

@@ -5,6 +5,11 @@ spring:
     username: sa
     password:
 
+  data:
+    redis:
+      host: ${SPRING_REDIS_HOST:localhost}
+      port: ${SPRING_REDIS_PORT:6379}
+
   security:
     oauth2:
       client: