B站模块：修复字幕过大的问题

B站模块：修复仅下载前6分钟字幕的问题

src/main/java/com/yutou/qqbot/QQBotApplication.java

@@ -6,7 +6,7 @@ import org.springframework.boot.autoconfigure.SpringBootApplication;
 
 @SpringBootApplication
 public class QQBotApplication {
-    public static final String version="QQBot v.1.2.27";
+    public static final String version="QQBot v.1.2.28";
     public static void main(String[] args) {
         System.out.println("version = " + version);
         SpringApplication.run(QQBotApplication.class, args);