update react, material

Change-Id: I4ae3cdf25982f0935641bf5846447e9d223563b4
diff --git a/client/src/components/UsernameChooser.js b/client/src/components/UsernameChooser.js
index 3d795ce..2df96c6 100644
--- a/client/src/components/UsernameChooser.js
+++ b/client/src/components/UsernameChooser.js
@@ -1,7 +1,7 @@
 import React, { useEffect, useState } from 'react'
 import usePromise from "react-fetch-hook/usePromise"
-import { InputAdornment, TextField } from '@material-ui/core'
-import { SearchRounded } from '@material-ui/icons'
+import { InputAdornment, TextField } from '@mui/material'
+import { SearchRounded } from '@mui/icons-material'
 import authManager from '../AuthManager'
 
 const isInputValid = input => input && input.length > 2