Prepare for new 26.1 player data storage location

Author: Phoenix616

src/main/java/de/minebench/syncinv/SyncInv.java

@@ -188,7 +188,9 @@ public void onEnable() {
         // Plugin startup logic
         loadConfig();
 
-        playerDataFolder = new File(getServer().getWorlds().get(0).getWorldFolder(), "playerdata");
+        playerDataFolder = getServer().getMinecraftVersion().startsWith("1.")
+                ? new File(getServer().getWorlds().get(0).getWorldFolder(), "playerdata")
+                : new File(new File(getServer().getWorlds().get(0).getWorldFolder(), "players"), "data");
         try {
             Method methodGetOfflinePlayer = getServer().getClass().getMethod("getOfflinePlayer", GameProfile.class);
             getOfflinePlayer = (gameProfile -> {