message: major upgrades
diff: "dependencies": {
  "bootstrap": "4.5.0",
  "classnames": "2.2.6",
  - "react": "16.13.1",
  - "react-dom": "16.13.1",
  + "react": "17.0.1",
  + "react-dom": "17.0.1",
  "react-router-dom": "5.2.0",
  - "react-scripts": "3.4.1",
  + "react-scripts": "4.0.0",
  "fs-extra": "9.0.1"
  },
  "eslintConfig": {
  