dotnet/sdk/9.0.313/Sdks/Microsoft.NET.Sdk.Razor/tools/rzc.runtimeconfig.json

{
  "runtimeOptions": {
    "tfm": "net9.0",
    "framework": {
      "name": "Microsoft.NETCore.App",
      "version": "9.0.15"
    },
    "rollForwardOnNoCandidateFx": 2,
    "configProperties": {
      "System.Reflection.Metadata.MetadataUpdater.IsSupported": false,
      "System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization": false
    }
  }
}