chore: 更新版本号至 4.2.2.0

此提交将 `AssemblyInfo.cs` 文件中的版本号和文件版本号从 `4.2.1.0` 更新为 `4.2.2.0`。

Author: clover-yan

Ink Canvas/Properties/AssemblyInfo.cs

@@ -49,5 +49,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("4.2.1.0")]
-[assembly: AssemblyFileVersion("4.2.1.0")]
+[assembly: AssemblyVersion("4.2.2.0")]
+[assembly: AssemblyFileVersion("4.2.2.0")]