Update dependencies from https://github.com/dotnet/arcade build 20200811.8 (#8153)

[master] Update dependencies from dotnet/arcade
- Updates:
  - Microsoft.DotNet.Arcade.Sdk: from 5.0.0-beta.20407.3 to 5.0.0-beta.20411.8

eng/common/sdk-task.ps1

@@ -42,6 +42,7 @@ function Build([string]$target) {
     /p:Configuration=$configuration `
     /p:RepoRoot=$RepoRoot `
     /p:BaseIntermediateOutputPath=$outputPath `
+    /v:$verbosity `
     @properties
 }