chore(deps): update react monorepo to v19 (major) (#52)

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

package.json

@@ -25,8 +25,8 @@
     "@iconify/json": "^2.2.280",
     "@tailwindcss/nesting": "0.0.0-insiders.565cd3e",
     "@tailwindcss/typography": "^0.5.15",
-    "@types/react": "^18.3.14",
-    "@types/react-dom": "^18.3.2",
+    "@types/react": "^19.0.1",
+    "@types/react-dom": "^19.0.1",
     "@typescript-eslint/eslint-plugin": "^7.18.0",
     "@typescript-eslint/parser": "^7.18.0",
     "astro": "^5.0.3",
@@ -43,8 +43,8 @@
     "prettier": "^3.4.2",
     "prettier-plugin-astro": "^0.14.1",
     "prettier-plugin-tailwindcss": "^0.6.9",
-    "react": "^18.3.1",
-    "react-dom": "^18.3.1",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0",
     "reading-time": "^1.5.0",
     "rehype-autolink-headings": "^7.1.0",
     "rehype-pretty-code": "^0.14.0",