Bump sass from 1.32.7 to 1.32.8 (#15760)

Bumps [sass](https://github.com/sass/dart-sass) from 1.32.7 to 1.32.8.
- [Release notes](https://github.com/sass/dart-sass/releases)
- [Changelog](https://github.com/sass/dart-sass/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sass/dart-sass/compare/1.32.7...1.32.8

)

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