chore(automate): Update package.json to 2.5.11

Commit by [GitHub Actions](https://github.com/Cysharp/UniTask/actions/runs/26083685280)

src/UniTask/Assets/Plugins/UniTask/Editor/UniTaskTrackerTreeView.cs

@@ -10,6 +10,11 @@ using UnityEditor.IMGUI.Controls;
 using Cysharp.Threading.Tasks.Internal;
 using System.Text;
 using System.Text.RegularExpressions;
+#if UNITY_6000_2_OR_NEWER
+using TreeView = UnityEditor.IMGUI.Controls.TreeView<int>;
+using TreeViewItem = UnityEditor.IMGUI.Controls.TreeViewItem<int>;
+using TreeViewState = UnityEditor.IMGUI.Controls.TreeViewState<int>;
+#endif
 
 namespace Cysharp.Threading.Tasks.Editor
 {
@@ -179,4 +184,3 @@ namespace Cysharp.Threading.Tasks.Editor
     }
 
 }
-

src/UniTask/Assets/Plugins/UniTask/package.json

@@ -2,7 +2,7 @@
     "name": "com.cysharp.unitask",
     "displayName": "UniTask",
     "author": { "name": "Cysharp, Inc.", "url": "https://cysharp.co.jp/en/" },
-    "version": "2.5.10",
+    "version": "2.5.11",
     "unity": "2018.4",
     "description": "Provides an efficient async/await integration to Unity.",
     "keywords": [ "async/await", "async", "Task", "UniTask" ],