fix : 환경 파일에 prefix 추가

Author: EpicFn

src/main/java/org/tuna/zoopzoop/backend/domain/space/space/service/SpaceService.java

@@ -32,7 +32,7 @@ public class SpaceService {
     private final TagRepository tagRepository;
     private final DataSourceRepository dataSourceRepository;
 
-    @Value("${aws.s3.prefix}")
+    @Value("${cloud.aws.s3.prefix}")
     private String s3Prefix;
 
     // ======================== 스페이스 조회 ======================== //

src/main/resources/application.yml

@@ -110,6 +110,7 @@ spring:
         bucket: ${AWS_S3_BUCKET_NAME}
       stack:
         auto: false
+      prefix: ${AWS_S3_PREFIX}
 
 #Spring doc 설정
 springdoc: