fix: grade 타입 String으로 변경

Author: ay-eonii

src/main/java/land/leets/domain/application/domain/Application.java

@@ -37,7 +37,7 @@ public class Application extends BaseTimeEntity {
     private String major;
 
     @Column(nullable = false)
-    private int grade;
+    private String grade;
 
     @Column
     private String project;

src/main/java/land/leets/domain/application/presentation/dto/ApplicationDetailsResponse.java

@@ -17,7 +17,7 @@ public class ApplicationDetailsResponse {
     private String name;
     private String gpa;
     private String major;
-    private int grade;
+    private String grade;
     private String project;
     private String algorithm;
     private String portfolio;

src/main/java/land/leets/domain/application/presentation/dto/ApplicationRequest.java

@@ -13,7 +13,7 @@ public class ApplicationRequest {
     private String phone;
     private String gpa;
     private String major;
-    private int grade;
+    private String grade;
     private String project;
     private String algorithm;
     private String portfolio;

src/main/java/land/leets/domain/application/presentation/dto/ApplicationResponse.java

@@ -14,7 +14,7 @@ public class ApplicationResponse {
     private Long id;
     private String name;
     private String gpa;
-    private int grade;
+    private String grade;
     private Position position;
     private String career;
     private LocalDateTime fixedInterviewDate;

src/main/resources/application.yml

@@ -17,7 +17,7 @@ spring:
         use_sql_comments: true
         show_sql: true
     hibernate:
-      ddl-auto: update
+      ddl-auto: create
   security:
     oauth2:
       client: