build(deps): bump react-dom and @types/react-dom in /frontend

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 19.2.6
- [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/v19.2.6/packages/react-dom)

Updates `@types/react-dom` from 18.3.7 to 19.2.3
- [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-version: 19.2.6
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: "@types/react-dom"
  dependency-version: 19.2.3
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

frontend/package-lock.json

@@ -13,12 +13,12 @@
     "date-fns": "^4.1.0",
     "framer-motion": "^11.15.0",
     "react": "^18.3.1",
-    "react-dom": "^18.3.1",
+    "react-dom": "^19.2.6",
     "zustand": "^5.0.2"
   },
   "devDependencies": {
     "@types/react": "^18.3.18",
-    "@types/react-dom": "^18.3.5",
+    "@types/react-dom": "^19.2.3",
     "@vitejs/plugin-react": "^4.3.4",
     "autoprefixer": "^10.4.20",
     "postcss": "^8.4.49",