Update tool versions

Ix.NET/Source/Directory.build.props

@@ -20,13 +20,13 @@
   </PropertyGroup>
 
   <!-- Hack needed to make code coverage work. See https://github.com/Microsoft/vstest/issues/1748. -->
-  <PropertyGroup Condition="'$(Configuration)' == 'Debug_CSharp8' OR '$(Configuration)' == 'Debug'">
+  <PropertyGroup Condition="'$(Configuration)' == 'Debug'">
     <DebugType>full</DebugType>
   </PropertyGroup>
     
   <ItemGroup>
-    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0-beta-63127-02" PrivateAssets="All"/>
-    <PackageReference Include="Nerdbank.GitVersioning" Version="2.2.13" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0-beta2-18618-05" PrivateAssets="All"/>
+    <PackageReference Include="Nerdbank.GitVersioning" Version="2.3.38" PrivateAssets="all" />
   </ItemGroup>
   
   <Target Name="AddCommitHashToAssemblyAttributes" BeforeTargets="GetAssemblyAttributes">