Update dependency sass to v1.89.2

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
sass	1.87.0 -> 1.89.2

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Release Notes

sass/dart-sass (sass)

v1.89.2

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Embedded Host

• Fixed a compilation error caused by an outdated buf dependency.

v1.89.1

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• No user-visible changes.

v1.89.0

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• Allow the Node package importer to load files even when there are multiple
  potential resolutions, as long as those resolutions all point to the same
  file.

v1.88.0

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• Allow custom properties with empty values (such as --var:;).

• Fix a bug when calculating source spans for interpolations.

Dart and JS APIs

• Potentially breaking bug fix: Throw an error when passing a function or
  mixin object from one compilation to another.

Dart API

• Deprecate passing a relative URL to compileString() and related functions.

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Code Coverage Report: Only Changed Files listed

Package	Coverage
Overall Coverage	🟢 30.78%

Minimum allowed coverage is 0%, this run produced 30.78%