fix(deps): update react monorepo to v19

Author: renovate[bot]

package.json

@@ -21,16 +21,16 @@
     "@tailwindcss/typography": "0.5.16",
     "astro": "2.10.15",
     "mdast-util-to-string": "3.2.0",
-    "react": "18.3.1",
-    "react-dom": "18.3.1",
+    "react": "19.1.0",
+    "react-dom": "19.1.0",
     "reading-time": "1.5.0",
     "rollup": "3.29.5",
     "shiki": "0.14.7",
     "tailwindcss": "3.4.17"
   },
   "devDependencies": {
-    "@types/react": "18.3.18",
-    "@types/react-dom": "18.3.5",
+    "@types/react": "19.1.2",
+    "@types/react-dom": "19.1.3",
     "@typescript/twoslash": "3.2.8",
     "remark-shiki-twoslash": "3.1.3"
   }