refactor/#197 게시글 조회 시 미리보기 글자 수 조정 (#198)

* refactor: post 미리보기 글자 수 80자로 조정

* refactor: public endpoint에 carousel 추가

Author: LeeHanEum

aics-api/src/main/java/kgu/developers/api/post/presentation/response/PostSummaryResponse.java

@@ -43,7 +43,7 @@ public static PostSummaryResponse from(Post post) {
 		DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
 
 		String content = post.getContent();
-		String description = content.length() > 30 ? content.substring(0, 30) : content;
+		String description = content.length() > 80 ? content.substring(0, 80) : content;
 
 		return PostSummaryResponse.builder()
 			.postId(post.getId())

aics-common/src/main/java/kgu/developers/common/config/SecurityConfig.java

@@ -82,6 +82,7 @@ public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
 		"/api/v1/posts/**",
 		"/api/v1/labs",
 		"/api/v1/comments",
+		"/api/v1/carousels",
 	};
 
 	CorsConfigurationSource corsConfigurationSource() {