matrix_3/bin/Debug/net9.0/matrix_3.runtimeconfig.json

{
  "runtimeOptions": {
    "tfm": "net9.0",
    "framework": {
      "name": "Microsoft.NETCore.App",
      "version": "9.0.0"
    },
    "configProperties": {
      "System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization": false
    }
  }
}