Upgrade react-scripts to 5.0.1

This also upgrades WebPack to v5, which should fix the issue #1768

ui/package.json

@@ -27,13 +27,13 @@
     "react-drag-listview": "^0.1.8",
     "react-ga": "^3.3.0",
     "react-hotkeys": "^2.0.0",
-    "react-icons": "^4.3.1",
+    "react-icons": "^4.4.0",
     "react-image-lightbox": "^5.1.4",
     "react-jinke-music-player": "^4.24.2",
     "react-measure": "^2.5.2",
     "react-redux": "^7.2.5",
     "react-router-dom": "^5.3.0",
-    "react-scripts": "^4.0.3",
+    "react-scripts": "5.0.1",
     "redux": "^4.1.1",
     "redux-saga": "^1.1.3",
     "uuid": "^8.3.2"

ui/src/layout/PlaylistsSubMenu.js

@@ -9,7 +9,7 @@ import { useHistory } from 'react-router-dom'
 import QueueMusicIcon from '@material-ui/icons/QueueMusic'
 import { Typography } from '@material-ui/core'
 import QueueMusicOutlinedIcon from '@material-ui/icons/QueueMusicOutlined'
-import { BiCog } from 'react-icons/all'
+import { BiCog } from 'react-icons/bi'
 import { useDrop } from 'react-dnd'
 import SubMenu from './SubMenu'
 import { canChangeTracks } from '../common'