chore: 로그아웃 성공시 200 반환

Author: sapiens2000

src/main/java/com/example/log4u/common/config/SecurityConfig.java

@@ -68,7 +68,10 @@ public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
 			.addFilterBefore(new JwtAuthenticationFilter(jwtUtil, userService), OAuth2LoginAuthenticationFilter.class)
 			.addFilterBefore(new JwtLogoutFilter(jwtUtil, refreshTokenRepository), LogoutFilter.class)
 			.logout(logout ->
-				logout.logoutUrl("/logout"))
+				logout.logoutUrl("/logout")
+					.logoutSuccessHandler((request, response, authentication) -> {
+						response.setStatus(HttpServletResponse.SC_OK);
+					}))
 			.exceptionHandling(exceptions -> exceptions
 				.authenticationEntryPoint((request, response, authException) -> {
 					response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);