Switch back to NuGet version of SSUI

Now that I've published Solid Shine UI 1.9.6, I'll switch back to using that release on NuGet. Yay!

Now the Allow Parent Scrolling bug has been properly fixed!

PathfinderJson/PathfinderJson.csproj

@@ -61,6 +61,7 @@
     <PackageReference Include="Markdig" Version="0.22.1" />
     <PackageReference Include="Markdig.Wpf" Version="0.5.0.1" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+	<PackageReference Include="SolidShineUi" Version="1.9.6" />
   </ItemGroup>
 
   <!--<ItemGroup>
@@ -81,12 +82,6 @@
     <EmbeddedResource Include="SkillList\pathfinder.json" />
   </ItemGroup>
 
-  <ItemGroup>
-    <Reference Include="SolidShineUi">
-      <HintPath>..\Ssui\SolidShineUi.dll</HintPath>
-    </Reference>
-  </ItemGroup>
-
   <!-- Uncomment these lines if using PublishReadyToRun -->
   <!--<ItemGroup>
     <TrimmerRootAssembly Include="System.Collections.Immutable" />