Update SourceLink.GitHub in Directory.Build.props (#646)

-fixes Error MSB4057 The target "SetEmbeddedFilesFromSourceControlManagerUntrackedFiles" during build

Jint/Directory.Build.props

@@ -20,7 +20,7 @@
   </PropertyGroup>
 
   <ItemGroup Condition="'$(SourceLinkEnabled)' != 'false'">
-    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0-beta-63127-02" PrivateAssets="All"/>
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0-beta2-19367-01" PrivateAssets="All"/>
   </ItemGroup>
 
   <!-- Called after so that the <VersionSuffix> is built after the local ones -->