[Fix] Minor Fixes

[ramazansancar]

Apart from these, the project is still working even though it was last updated 4 years ago. Good job.

• It needs to work depending on requestURL .env. In order to work without interfering with the code, .env needs to be updated and it needs to work.

REACT_APP_SERVER_API_URL=http://localhost:3003

https://github.com/cahitihac/kap-notifier/blob/master/src/App.js#L79-L82

• react-scripts dependencies must be version ^5.0.1 to work on Node 20.x and npm 10.x.

{
  "name": "kap-notifier",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "axios": "^0.19.2",
    "cors": "^2.8.5",
    "express": "^4.17.1",
    "react": "^16.13.1",
    "react-dom": "^16.13.1",
    "react-scripts": "^5.0.1" // Upgraded
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "server": "node ./server/index.js",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": "react-app"
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  },
  "engines": {
    "node": "20.x", // Upgraded
    "npm": "10.x" // Upgraded
  }
}