Bump Ookii.Dialogs.Wpf from 2.0.0 to 3.1.0

Bumps [Ookii.Dialogs.Wpf](https://github.com/augustoproiete/ookii-dialogs-wpf) from 2.0.0 to 3.1.0.
- [Release notes](https://github.com/augustoproiete/ookii-dialogs-wpf/releases)
- [Commits](https://github.com/augustoproiete/ookii-dialogs-wpf/compare/v2.0.0...v3.1.0)

Il2CppInspector.GUI/Il2CppInspector.GUI.csproj

@@ -30,7 +30,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NETCore.Targets" Version="2.1.0" ExcludeAssets="all" PrivateAssets="all" />
-    <PackageReference Include="Ookii.Dialogs.Wpf.NETCore" Version="2.0.0" />
+    <PackageReference Include="Ookii.Dialogs.Wpf" Version="3.1.0" />
     <PackageReference Include="System.Configuration.ConfigurationManager" Version="4.7.0" />
     <PackageReference Include="XamlAnimatedGif" Version="1.2.2">
       <NoWarn>NU1701</NoWarn>
@@ -61,4 +61,4 @@
     </None>
   </ItemGroup>
 
-</Project>
+</Project>