Fix dotnet-mcg dependency.
Fix dotnet-mcg dependency.

Bump NETStandard.Library version to rc3-23727

gkhanna79/cli,blackdwarf/cli,gkhanna79/cli,borgdylan/dotnet-cli,jkotas/cli,blackdwarf/cli,borgdylan/dotnet-cli,stuartleeks/dotnet-cli,borgdylan/dotnet-cli,borgdylan/dotnet-cli,jkotas/cli,blackdwarf/cli,stuartleeks/dotnet-cli,gkhanna79/cli,borgdylan/dotnet-cli,stuartleeks/dotnet-cli,blackdwarf/cli,jkotas/cli,jkotas/cli,stuartleeks/dotnet-cli,gkhanna79/cli,jkotas/cli,gkhanna79/cli,anurse/Cli,stuartleeks/dotnet-cli