Bump react and @types/react

Bumps [react](https://github.com/facebook/react/tree/HEAD/packages/react) and [@types/react](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/react). These dependencies needed to be updated together.

Updates `react` from 18.3.1 to 19.1.0
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v19.1.0/packages/react)

Updates `@types/react` from 18.3.10 to 19.0.12
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/react)

---
updated-dependencies:
- dependency-name: react
  dependency-type: direct:development
  update-type: version-update:semver-major
- dependency-name: "@types/react"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -36,7 +36,7 @@
     "@types/github-slugger": "^1.3.0",
     "@types/gtag.js": "^0.0.20",
     "@types/lodash.kebabcase": "^4.1.9",
-    "@types/react": "^18.3.6",
+    "@types/react": "^19.0.12",
     "@typescript-eslint/parser": "^8.5.0",
     "astro-eslint-parser": "^1.0.3",
     "eslint": "^9.19.0",
@@ -45,7 +45,7 @@
     "prettier": "^3.5.1",
     "prettier-plugin-astro": "^0.14.1",
     "prettier-plugin-tailwindcss": "^0.6.6",
-    "react": "^18.3.1",
+    "react": "^19.1.0",
     "react-dom": "^18.3.1",
     "typescript-eslint": "^8.5.0"
   }