chore(deps): bump react-dom and @types/react-dom

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

Updates `react-dom` from 18.3.1 to 19.0.0
- [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/v19.0.0/packages/react-dom)

Updates `@types/react-dom` from 18.3.0 to 19.0.3
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/react-dom)

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

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -45,7 +45,7 @@
     "next": "^15.1.5",
     "postcode": "^5.1.0",
     "react": "^18",
-    "react-dom": "^18",
+    "react-dom": "^19",
     "react-hook-form": "^7.53.1",
     "react-spinners": "^0.15.0",
     "recharts": "^2.15.0",
@@ -61,7 +61,7 @@
     "@types/jest": "^29.5.14",
     "@types/node": "^22.10.5",
     "@types/react": "^18",
-    "@types/react-dom": "^18",
+    "@types/react-dom": "^19",
     "@typescript-eslint/eslint-plugin": "^7.0.0",
     "@typescript-eslint/parser": "^6.21.0",
     "autoprefixer": "^10.4.20",