Updating System.Resources.Extensions to 8.0.0 in Roslyn repo

[tmat]

I'm trying to update System.Resources.Extensions to 8.0.0 in Roslyn repo.

It seems like SystemResourcesExtensionsVersion not overridden by source build, so the build fails due to additional pre-built:

Update VS SDK to 17.10.22-preview-1 by tmat · Pull Request #72359 · dotnet/roslyn (github.com)

[mthalman]

I've responded: dotnet/roslyn#72359 (comment)

In the future, you can ping the source build team directly from the PR using @dotnet/source-build-internal