build: bump unicode-display_width in /Library/Homebrew

Bumps [unicode-display_width](https://github.com/janlelis/unicode-display_width) from 1.6.0 to 1.6.1.
- [Release notes](https://github.com/janlelis/unicode-display_width/releases)
- [Changelog](https://github.com/janlelis/unicode-display_width/blob/master/CHANGELOG.md)
- [Commits](https://github.com/janlelis/unicode-display_width/compare/v1.6.0...v1.6.1

)

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