Bump y18n from 3.2.1 to 4.0.3 in /packages/geofire-common

Bumps [y18n](https://github.com/yargs/y18n) from 3.2.1 to 4.0.3.
- [Release notes](https://github.com/yargs/y18n/releases)
- [Changelog](https://github.com/yargs/y18n/blob/y18n-v4.0.3/CHANGELOG.md)
- [Commits](yargs/y18n@v3.2.1...y18n-v4.0.3)

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

Author: dependabot[bot]