Fix auth action return types

The authActions functions (signIn, signOut, resetPassword) were returning a promise with an object containing an error property. The AuthContextType expected these functions to return a promise that resolves to void. This commit updates the return types of these functions to Promise<void> and adjusts the logic to handle errors appropriately without returning them directly in the promise resolution.

src/contexts/auth/authActions.ts

@@ -71,7 +71,7 @@ export const signUp = async (email: string, password: string, username: string)
   }
 };
 
-export const signOut = async () => {
+export const signOut = async (): Promise<void> => {
   try {
     const { error } = await supabase.auth.signOut();
     
@@ -82,14 +82,12 @@ export const signOut = async () => {
         description: error.message,
         variant: 'destructive',
       });
-      return { error };
+    } else {
+      toast({
+        title: '로그아웃 성공',
+        description: '다음에 또 만나요!',
+      });
     }
-
-    toast({
-      title: '로그아웃 성공',
-      description: '다음에 또 만나요!',
-    });
-    return { error: null };
   } catch (error: any) {
     console.error('로그아웃 중 예외 발생:', error);
     toast({
@@ -97,7 +95,6 @@ export const signOut = async () => {
       description: '예상치 못한 오류가 발생했습니다.',
       variant: 'destructive',
     });
-    return { error };
   }
 };