Update dependencies from https://github.com/dotnet/roslyn build 20200814.4 (#24962)

Microsoft.Net.Compilers.Toolset
 From Version 3.8.0-2.20407.3 -> To Version 3.8.0-2.20414.4

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

Author: dotnet-maestro[bot]

eng/Version.Details.xml

@@ -317,9 +317,9 @@
       <Uri>https://github.com/dotnet/arcade</Uri>
       <Sha>83fda4b3f6d93e713749fd1b27c4a6d40b118b13</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="3.8.0-2.20407.3">
+    <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="3.8.0-2.20414.4">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>dba2fa57432b4bd9cc7880e2c6fe3acdd01bba3c</Sha>
+      <Sha>beada51586dedc46a7fe5ca381ffb10e2b177070</Sha>
     </Dependency>
   </ToolsetDependencies>
 </Dependencies>

eng/Versions.props

@@ -62,7 +62,7 @@
   -->
   <PropertyGroup Label="Automated">
     <!-- Packages from dotnet/roslyn -->
-    <MicrosoftNetCompilersToolsetPackageVersion>3.8.0-2.20407.3</MicrosoftNetCompilersToolsetPackageVersion>
+    <MicrosoftNetCompilersToolsetPackageVersion>3.8.0-2.20414.4</MicrosoftNetCompilersToolsetPackageVersion>
     <!-- Packages from dotnet/runtime -->
     <MicrosoftExtensionsDependencyModelPackageVersion>5.0.0-rc.1.20417.14</MicrosoftExtensionsDependencyModelPackageVersion>
     <MicrosoftNETCoreAppInternalPackageVersion>5.0.0-rc.1.20417.14</MicrosoftNETCoreAppInternalPackageVersion>