[main] Source code updates from dotnet/dotnet (#19264)

* Backflow from https://github.com/dotnet/dotnet / 8c56ff5 build 300794

[[ commit created by automation ]]

* Update dependencies

---------

Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>

Author: dotnet-maestro[bot]

eng/Version.Details.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Dependencies>
-  <Source Uri="https://github.com/dotnet/dotnet" Mapping="fsharp" Sha="3531114c7feabc86ea3769ca2c5b804e5339a932" BarId="300217" />
+  <Source Uri="https://github.com/dotnet/dotnet" Mapping="fsharp" Sha="8c56ff58fc59fd33fc1dab5c6a7155ca16511bb2" BarId="300794" />
   <ProductDependencies>
     <Dependency Name="Microsoft.Build" Version="18.1.0-preview-25515-01">
       <Uri>https://github.com/dotnet/msbuild</Uri>