chore(deps-dev): bump @react-native/babel-preset in /demo

Bumps [@react-native/babel-preset](https://github.com/facebook/react-native) from 0.83.1 to 0.84.1.
- [Release notes](https://github.com/facebook/react-native/releases)
- [Changelog](https://github.com/facebook/react-native/blob/main/CHANGELOG.md)
- [Commits](facebook/react-native@v0.83.1...v0.84.1)

---
updated-dependencies:
- dependency-name: "@react-native/babel-preset"
  dependency-version: 0.84.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

demo/package-lock.json

@@ -26,7 +26,7 @@
     "@react-native-community/cli": "^20.1.1",
     "@react-native-community/cli-platform-android": "^20.0.2",
     "@react-native-community/cli-platform-ios": "^20.1.1",
-    "@react-native/babel-preset": "0.83.1",
+    "@react-native/babel-preset": "0.84.1",
     "@react-native/eslint-config": "0.84.1",
     "@react-native/metro-config": "0.84.1",
     "@react-native/typescript-config": "0.83.1",