Migrate to .NET 9

Author: infinitepower18

WSA System Control/WSA System Control.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFramework>net8.0-windows10.0.22000.0</TargetFramework>
+    <TargetFramework>net9.0-windows</TargetFramework>
     <RootNamespace>WSA_System_Control</RootNamespace>
     <Nullable>enable</Nullable>
     <UseWindowsForms>true</UseWindowsForms>
@@ -50,4 +50,4 @@
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </None>
   </ItemGroup>
-</Project>
+</Project>