sp-dev-fx-webparts/config/package-solution.json

{
  "solution": {
    "name": "React Content Query",
    "id": "00406271-0276-406f-9666-512623eb6709",
    "version": "1.0.0.0"
  },
  "paths": {
    "zippedPackage": "solution/react-content-query-webpart.sppkg"
  }
}