Update dependencies from https://github.com/mono/linker build 2021090…

…9.1 (#58888)

Microsoft.NET.ILLink.Tasks
 From Version 6.0.100-preview.6.21424.4 -> To Version 6.0.100-1.21459.1

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

eng/Version.Details.xml

@@ -190,9 +190,9 @@
       <Uri>https://github.com/dotnet/runtime</Uri>
       <Sha>fde6b37e985605d862c070256de7c97e2a3f3342</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NET.ILLink.Tasks" Version="6.0.100-preview.6.21424.4">
+    <Dependency Name="Microsoft.NET.ILLink.Tasks" Version="6.0.100-1.21459.1">
       <Uri>https://github.com/mono/linker</Uri>
-      <Sha>edad7cbe1c568d299c196883de57fb5519fd6399</Sha>
+      <Sha>c8499798a2a09639174e2f5c694d6652794cc73d</Sha>
     </Dependency>
     <Dependency Name="Microsoft.DotNet.XHarness.TestRunners.Xunit" Version="1.0.0-prerelease.21404.1">
       <Uri>https://github.com/dotnet/xharness</Uri>

eng/Versions.props

@@ -167,7 +167,7 @@
     <!-- Docs -->
     <MicrosoftPrivateIntellisenseVersion>5.0.0-preview-20201009.2</MicrosoftPrivateIntellisenseVersion>
     <!-- ILLink -->
-    <MicrosoftNETILLinkTasksVersion>6.0.100-preview.6.21424.4</MicrosoftNETILLinkTasksVersion>
+    <MicrosoftNETILLinkTasksVersion>6.0.100-1.21459.1</MicrosoftNETILLinkTasksVersion>
     <MicrosoftNETILLinkAnalyzerPackageVersion>$(MicrosoftNETILLinkTasksVersion)</MicrosoftNETILLinkAnalyzerPackageVersion>
     <!-- ICU -->
     <MicrosoftNETCoreRuntimeICUTransportVersion>6.0.0-rc.2.21428.1</MicrosoftNETCoreRuntimeICUTransportVersion>