fix: authrotiy condition mismatch

src/main/java/com/soogung/simblue/domain/user/presentation/StudentController.java

@@ -22,15 +22,15 @@ public class StudentController {
 
     @PostMapping
     public void joinStudent(
-            @AuthenticationPrincipal(authority = Authority.USER) User user,
+            @AuthenticationPrincipal(authority = Authority.STUDENT) User user,
             @RequestBody @Valid StudentRequest request
     ) {
         joinStudentService.execute(user, request);
     }
 
     @PutMapping
     public void updateStudent(
-            @AuthenticationPrincipal(authority = Authority.USER) User user,
+            @AuthenticationPrincipal(authority = Authority.STUDENT) User user,
             @RequestBody @Valid UpdateStudentRequest request
     ) {
         updateStudentService.execute(user, request);

src/main/java/com/soogung/simblue/global/auth/annotation/AuthenticationArgumentResolver.java

@@ -38,7 +38,7 @@ public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer m
     private void validateAuthority(User user, AuthenticationPrincipal authenticationPrincipal) {
         if (
                 !authenticationPrincipal.authority().equals(Authority.ALL) &&
-                !user.getAuthority().name().equals(authenticationPrincipal.authority().name())
+                !user.getAuthority().getRole().equals(authenticationPrincipal.authority().name())
         ) {
             throw AuthorityMismatchException.EXCEPTION;
         }

src/main/java/com/soogung/simblue/global/auth/annotation/Authority.java

@@ -1,5 +1,5 @@
 package com.soogung.simblue.global.auth.annotation;
 
 public enum Authority {
-    ALL, USER, TEACHER
+    ALL, STUDENT, TEACHER
 }