chore: Bump version to 2.9.1 and update version code

Author: RealHeart

zmusic-plugin/build.gradle

@@ -2,7 +2,7 @@ plugins {
     alias(libs.plugins.shadow)
 }
 
-version = '2.9.0'
+version = '2.9.1'
 
 dependencies {
     compileOnly 'ink.ptms:nms-all:1.0.0'

zmusic-plugin/src/main/java/me/zhenxin/zmusic/ZMusic.java

@@ -28,7 +28,7 @@ public final class ZMusic {
 
     public static File dataFolder;
     public static String thisVer;
-    public static int thisVerCode = 202408050;
+    public static int thisVerCode = 202505280;
     public static boolean isVip = false;
     public static boolean isViaVer = true;
     public static boolean isEnable = true;