Fix test build error when .NET Core SDK 5 is installed on the machine

[BruceForstall]

Fixes #185

[ViktorHofer]

@BruceForstall were you able to verify if this indeed fixes the failure?

[BruceForstall]

@BruceForstall were you able to verify if this indeed fixes the failure?

Yes, it does.

Looks like the CI died. I'll try again.

[BruceForstall]

/azp help

[azure-pipelines]

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[BruceForstall]

/azp list

[azure-pipelines]

CI/CD Pipelines for this repository:

• runtime-installer
• runtime-libraries
• runtime-coreclr
• runtime-coreclr outerloop
• runtime-coreclr crossgen2
• runtime-libraries outerloop
• runtime-libraries outerloop-windows
• runtime-libraries outerloop-linux
• runtime-libraries outerloop-osx

[BruceForstall]

/azp run runtime-coreclr

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[BruceForstall]

@dotnet/runtime-infrastructure The runtime-coreclr pipeline "Build Windows_NT arm64 checked" failure here in the "Build native test components" step has an interesting failure:

...
Using Windows SDK version 10.0.18362.0 for WinRT interop tests.
Terminate batch job (Y/N)? 
BUILDTEST: Error: failed to generate native component build project
^C

It looks like someone was on the machine and hit CTRL+C?!?

[ViktorHofer]

Thanks. I think we can safely merge this.