Bump react-dom from 18.2.0 to 18.3.0 in /app-react

Bumps [react-dom](https://github.com/facebook/react/tree/HEAD/packages/react-dom) from 18.2.0 to 18.3.0.
- [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/HEAD/packages/react-dom)

---
updated-dependencies:
- dependency-name: react-dom
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

app-react/package.json

@@ -7,7 +7,7 @@
     "@testing-library/react": "^15.0.4",
     "@testing-library/user-event": "^14.5.2",
     "react": "^18.2.0",
-    "react-dom": "^18.2.0",
+    "react-dom": "^18.3.0",
     "react-scripts": "5.0.1",
     "web-vitals": "^3.5.2"
   },