testfx/global.json

{
  "tools": {
    "dotnet": "8.0.300",
    "runtimes": {
      "dotnet": [
        "3.1.32",
        "6.0.30",
        "7.0.19",
        "8.0.5"
      ]
    },
    "vs": {
      "version": "17.8.3"
    }
  },
  "sdk": {
    "version": "8.0.300",
    "allowPrerelease": true,
    "rollForward": "latestFeature"
  },
  "msbuild-sdks": {
    "Microsoft.DotNet.Arcade.Sdk": "8.0.0-beta.24225.1",
    "MSBuild.Sdk.Extras": "3.0.44"
  }
}