Fix a build break

There appears to be a merge issue with the NuGet upgrade change that
caused a build break.  This fixes that.

src/Interactive/EditorFeatures/VisualBasic/BasicInteractiveEditorFeatures.vbproj

@@ -119,9 +119,9 @@
     <Reference Include="System.ComponentModel.Composition" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="WindowsBase" />
-    <Reference Include="System.Collections.Immutable, Version=1.1.33.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+    <Reference Include="System.Collections.Immutable, Version=1.1.34.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\..\..\..\packages\System.Collections.Immutable.1.1.33-beta\lib\portable-net45+win8+wp8+wpa81\System.Collections.Immutable.dll</HintPath>
+      <HintPath>..\..\..\..\packages\System.Collections.Immutable.1.1.34-rc\lib\portable-net45+win8+wp8+wpa81\System.Collections.Immutable.dll</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>
@@ -160,4 +160,4 @@
     <Import Project="..\..\..\..\build\VSL.Imports.Closed.targets" />
     <Import Project="$(SolutionDir)\.nuget\NuGet.targets" Condition="Exists('$(SolutionDir)\.nuget\NuGet.targets')" />
   </ImportGroup>
-</Project>
\ No newline at end of file
+</Project>