Merge pull request #96 from billilge/refactor/#95

refactor: 관리자 대시보드 API 신청 시간을 대여시각으로 변경 완료

Author: tnals0924

src/main/kotlin/site/billilge/api/backend/domain/rental/dto/response/DashboardResponse.kt

@@ -28,8 +28,8 @@ data class DashboardResponse(
         val renterStudentId: String,
         @field:Schema(description = "대여 상태", example = "PENDING")
         val status: RentalStatus,
-        @field:Schema(description = "신청일")
-        val applicatedAt: LocalDateTime
+        @field:Schema(description = "대여 시각")
+        val rentAt: LocalDateTime?,
     ) {
         companion object {
             @JvmStatic
@@ -42,7 +42,7 @@ data class DashboardResponse(
                     renterName = rentalHistory.member.name,
                     renterStudentId = rentalHistory.member.studentId,
                     status = rentalHistory.rentalStatus,
-                    applicatedAt = rentalHistory.applicatedAt
+                    rentAt = rentalHistory.rentAt
                 )
             }
         }