Bump micromatch and react-native in /example

Bumps [micromatch](https://github.com/micromatch/micromatch) to 4.0.8 and updates ancestor dependency [react-native](https://github.com/facebook/react-native/tree/HEAD/packages/react-native). These dependencies need to be updated together.


Updates `micromatch` from 3.1.10 to 4.0.8
- [Release notes](https://github.com/micromatch/micromatch/releases)
- [Changelog](https://github.com/micromatch/micromatch/blob/master/CHANGELOG.md)
- [Commits](micromatch/micromatch@3.1.10...4.0.8)

Updates `react-native` from 0.68.7 to 0.75.3
- [Release notes](https://github.com/facebook/react-native/releases)
- [Changelog](https://github.com/facebook/react-native/blob/main/CHANGELOG-pre-070.md)
- [Commits](https://github.com/facebook/react-native/commits/v0.75.3/packages/react-native)

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

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

Author: dependabot[bot]