update react, material

Change-Id: I4ae3cdf25982f0935641bf5846447e9d223563b4
diff --git a/client/src/components/welcome.js b/client/src/components/welcome.js
index ff39c0b..46c054c 100644
--- a/client/src/components/welcome.js
+++ b/client/src/components/welcome.js
@@ -1,4 +1,4 @@
-import { Button, Container } from '@material-ui/core';
+import { Button, Container } from '@mui/material';
 import { AnimatePresence, motion } from 'framer-motion';
 import React, { useState } from 'react';
 import JamiLogo from '../../public/jami-logo-icon.svg'