Bump browserslist from 4.5.5 to 4.16.6 in /example

Bumps [browserslist](https://github.com/browserslist/browserslist) from 4.5.5 to 4.16.6.
- [Release notes](https://github.com/browserslist/browserslist/releases)
- [Changelog](https://github.com/browserslist/browserslist/blob/main/CHANGELOG.md)
- [Commits](browserslist/browserslist@4.5.5...4.16.6)

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