Update react to v18 (lambdaworks#83)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

website/package.json

@@ -20,7 +20,7 @@
     "@mdx-js/react": "^1.6.22",
     "clsx": "^1.2.1",
     "prism-react-renderer": "^1.3.5",
-    "react": "^17.0.2",
+    "react": "^18.0.0",
     "react-dom": "^17.0.2"
   },
   "devDependencies": {