fix: 修复MailAccountService 更新/删除缓存未清空

yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/service/mail/MailAccountServiceImpl.java

@@ -58,7 +58,7 @@ public class MailAccountServiceImpl implements MailAccountService {
     }
 
     @Override
-    @CacheEvict(value = RedisKeyConstants.MAIL_ACCOUNT, key = "#updateReqVO.id")
+    @CacheEvict(value = RedisKeyConstants.MAIL_ACCOUNT, key = "#id")
     public void deleteMailAccount(Long id) {
         // 校验是否存在账号
         validateMailAccountExists(id);