Bump rollup from 2.79.1 to 2.79.2 in /examples/react-example (#795)

Bumps [rollup](https://github.com/rollup/rollup) from 2.79.1 to 2.79.2.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](rollup/rollup@v2.79.1...v2.79.2)

---
updated-dependencies:
- dependency-name: rollup
  dependency-type: indirect
...

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