Update NuGet packages for frontend projects

Author: christophwille

DecompilerNuGetDemos.workbook

@@ -6,7 +6,7 @@ platforms:
 - DotNetCore
 packages:
 - id: ICSharpCode.Decompiler
-  version: 4.0.0.4226-alpha1
+  version: 4.0.0.4285-beta1
 ---
 
 Setup: load the references required to work with the decompiler

ICSharpCode.Decompiler.Console/ICSharpCode.Decompiler.Console.csproj

@@ -16,7 +16,7 @@
 
   <ItemGroup>
     <PackageReference Include="McMaster.Extensions.CommandLineUtils" Version="2.2.0" />
-    <PackageReference Include="ICSharpCode.Decompiler" Version="4.0.0.4226-alpha1" />
+    <PackageReference Include="ICSharpCode.Decompiler" Version="4.0.0.4285-beta1" />
 
     <PackageReference Include="System.IO.FileSystem.Primitives" Version="4.3.0" />
     <PackageReference Include="System.Runtime.Handles" Version="4.3.0" />

ICSharpCode.Decompiler.PowerShell/ICSharpCode.Decompiler.PowerShell.csproj

@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="PowerShellStandard.Library" Version="5.1.0-preview-03" />
-    <PackageReference Include="ICSharpCode.Decompiler" Version="4.0.0.4226-alpha1" />
+    <PackageReference Include="ICSharpCode.Decompiler" Version="4.0.0.4285-beta1" />
   </ItemGroup>
 
 </Project>