fix(deps): update dependency sass to v1.77.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sass	1.75.0 -> 1.77.0

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Release Notes

sass/dart-sass (sass)

### [`v1.77.0`](https://togithub.com/sass/dart-sass/blob/HEAD/CHANGELOG.md#1770) [Compare Source](https://togithub.com/sass/dart-sass/compare/1.76.0...1.77.0) - *Don't* throw errors for at-rules in keyframe blocks. ### [`v1.76.0`](https://togithub.com/sass/dart-sass/blob/HEAD/CHANGELOG.md#1760) [Compare Source](https://togithub.com/sass/dart-sass/compare/1.75.0...1.76.0) - Throw errors for misplaced statements in keyframe blocks. - Mixins and functions whose names begin with `--` are now deprecated for forwards-compatibility with the in-progress CSS functions and mixins spec. This deprecation is named `css-function-mixin`.

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