Replace dependency @material-ui/core with @mui/material

Author: renovate[bot]

frontend/package.json

@@ -45,7 +45,7 @@
     "webpack-dev-server": "4.7.4"
   },
   "dependencies": {
-    "@material-ui/core": "4.12.3",
+    "@mui/material": "5.0.0",
     "@material-ui/icons": "4.11.2",
     "axios": "0.26.0",
     "nullthrows": "1.1.1",