[main] Update dependencies from dotnet/arcade#729

Merged

dotnet-maestro[bot] merged 3 commits intomainfrom

darc-main-0f72d64d-744a-45cb-87a6-e4949bdd7241

Aug 23, 2021

Commits on Aug 9, 2021

Update dependencies from https://github.com/dotnet/arcade build 20210806.6
dotnet-maestro[bot]
committed

Commits on Aug 16, 2021

Update dependencies from https://github.com/dotnet/arcade build 20210812.1
dotnet-maestro[bot]
committed

Commits on Aug 23, 2021

Update dependencies from https://github.com/dotnet/arcade build 20210820.4
dotnet-maestro[bot]
committed