Make downloadFileWithId method private in final class (#1441)

telegrambots-abilities/src/main/java/org/telegram/telegrambots/abilitybots/api/bot/DefaultAbilities.java

@@ -467,7 +467,7 @@ private Optional<Message> send(String message, Update upd) {
     return bot.silent.send(getLocalizedMessage(message, AbilityUtils.getUser(upd).getLanguageCode()), chatId);
   }
 
-  protected File downloadFileWithId(String fileId) throws TelegramApiException {
+  private File downloadFileWithId(String fileId) throws TelegramApiException {
     return bot.telegramClient.downloadFile(bot.telegramClient.execute(GetFile.builder().fileId(fileId).build()));
   }
 }