fix(deps): replace dependency @material-ui/core with @mui/material ^5.0.0

Author: renovate[bot]

website/package.json

@@ -9,7 +9,7 @@
     "@deck.gl/core": "^8.9.36",
     "@deck.gl/layers": "^8.9.36",
     "@deck.gl/react": "^8.9.36",
-    "@material-ui/core": "^4.12.4",
+    "@mui/material": "^5.0.0",
     "@turf/turf": "^7.1.0",
     "@types/cors": "^2.8.17",
     "@types/d3": "^7.4.3",