fix: 면접시간 응답 dto에 datetime format 추가

src/main/java/com/likelion/innerjoin/post/model/dto/response/MeetingTimeResponseDTO.java

@@ -1,5 +1,6 @@
 package com.likelion.innerjoin.post.model.dto.response;
 
+import com.fasterxml.jackson.annotation.JsonFormat;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 
@@ -13,12 +14,16 @@ public class MeetingTimeResponseDTO {
     private int allowedNum;
     private int reservedNum; // 예약된 사람 수
     private List<ApplicantDTO> applicantList; // 예약한 사람 리스트
+
+    @JsonFormat(pattern = "yyyy-MM-dd'T'HH:mm:ss")
     private LocalDateTime meetingStartTime;
+
+    @JsonFormat(pattern = "yyyy-MM-dd'T'HH:mm:ss")
     private LocalDateTime meetingEndTime;
 
     @Data
     @AllArgsConstructor
-    public static class ApplicantDTO { // static으로 선언
+    public static class ApplicantDTO {
         private Long applicantId;
         private String name;
         private String studentNumber;