Update dependency sass to v1.77.8

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sass	1.77.7 -> 1.77.8

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Release Notes

sass/dart-sass (sass)

### [`v1.77.8`](https://togithub.com/sass/dart-sass/blob/HEAD/CHANGELOG.md#1778) [Compare Source](https://togithub.com/sass/dart-sass/compare/1.77.7...1.77.8) - No user-visible changes.

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Configuration

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