Bump lodash and react-native in /example/pushDemo_new

Bumps [lodash](https://github.com/lodash/lodash) to 4.17.21 and updates ancestor dependency [react-native](https://github.com/facebook/react-native). These dependencies need to be updated together.


Updates `lodash` from 4.17.15 to 4.17.21
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.15...4.17.21)

Updates `react-native` from 0.53.3 to 0.70.6
- [Release notes](https://github.com/facebook/react-native/releases)
- [Changelog](https://github.com/facebook/react-native/blob/main/CHANGELOG.md)
- [Commits](facebook/react-native@v0.53.3...v0.70.6)

---
updated-dependencies:
- dependency-name: lodash
  dependency-type: indirect
- dependency-name: react-native
  dependency-type: direct:production
...

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

Author: dependabot[bot]