fix(deps): update react monorepo to v19

Author: renovate[bot]

website/package-lock.json

@@ -19,8 +19,8 @@
     "@mdx-js/react": "^3.0.0",
     "clsx": "^2.1.0",
     "prism-react-renderer": "^2.3.0",
-    "react": "^18.2.0",
-    "react-dom": "^18.2.0"
+    "react": "^19.2.4",
+    "react-dom": "^19.2.4"
   },
   "devDependencies": {
     "@docusaurus/module-type-aliases": "^3.6.0",