Synchronize package refs in nuspec with csproj.

Set version to 'beta3'

ICSharpCode.Decompiler/ICSharpCode.Decompiler.nuspec.template

@@ -16,8 +16,8 @@
     <tags>C# Decompiler ILSpy</tags>
     <dependencies>
       <dependency id="Humanizer.Core" version="2.2.0" />
-      <dependency id="System.Reflection.Metadata" version="1.4.2" />
-      <dependency id="System.Collections.Immutable" version="1.3.1" />
+      <dependency id="System.Collections.Immutable" version="1.5.0" />
+      <dependency id="System.Reflection.Metadata" version="1.6.0" />
       <dependency id="System.ValueTuple" version="4.3.0" />
     </dependencies>
   </metadata>

ILSpy/Properties/AssemblyInfo.template.cs

@@ -42,7 +42,7 @@ internal static class RevisionClass
 	public const string Minor = "0";
 	public const string Build = "0";
 	public const string Revision = "$INSERTREVISION$";
-	public const string VersionName = "beta2";
+	public const string VersionName = "beta3";
 	
 	public const string FullVersion = Major + "." + Minor + "." + Build + ".$INSERTREVISION$$INSERTBRANCHPOSTFIX$$INSERTVERSIONNAMEPOSTFIX$";
 }