Upgrade to System.Runtime.CompilerServices.Unsafe v4.5.2

Author: mythz

tests/Console.Tests/Console.Tests.csproj

@@ -65,7 +65,6 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Runtime.CompilerServices.Unsafe, Version=4.0.4.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
-      <HintPath>..\..\src\packages\System.Runtime.CompilerServices.Unsafe.4.5.0\lib\netstandard1.0\System.Runtime.CompilerServices.Unsafe.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.ValueTuple, Version=4.0.3.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51">

tests/Console.Tests/packages.config

@@ -2,7 +2,7 @@
 <packages>
   <package id="System.Buffers" version="4.4.0" targetFramework="net45" />
   <package id="System.Memory" version="4.5.2" targetFramework="net45" />
-  <package id="System.Runtime.CompilerServices.Unsafe" version="4.5.0" targetFramework="net45" />
+  <package id="System.Runtime.CompilerServices.Unsafe" version="4.5.2" targetFramework="net45" />
   <package id="ServiceStack" version="5.4.1" targetFramework="net45" />
   <package id="ServiceStack.Client" version="5.4.1" targetFramework="net45" />
   <package id="ServiceStack.Common" version="5.4.1" targetFramework="net45" />