build(deps): bump sass from 1.28.0 to 1.32.4 in /lib (wtho#50)

Bumps [sass](https://github.com/sass/dart-sass) from 1.28.0 to 1.32.4.
- [Release notes](https://github.com/sass/dart-sass/releases)
- [Changelog](https://github.com/sass/dart-sass/blob/master/CHANGELOG.md)
- [Commits](sass/dart-sass@1.28.0...1.32.4)

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