[Infra] Try to fix download.

Author: reegeek

Build/Nuke/Build.cs

@@ -83,9 +83,8 @@ partial class Build : Nuke.Common.NukeBuild
  var ps1File = ResultDirectory / "donet-install.ps1";
  using (var client = new HttpClient())
  {
- using var s = client.GetStreamAsync(@"https://dot.net/v1/dotnet-install.ps1");
- using var fs = new FileStream(ps1File, FileMode.CreateNew);
- s.Result.CopyTo(fs);
+ var bytes = client.GetByteArrayAsync(@"https://dot.net/v1/dotnet-install.ps1").Result;
+ File.WriteAllBytes(ps1File, bytes);
  }
  PowerShellTasks.PowerShell($" {ps1File} -Channel 3.0 -Architecture x86");
  });