Update dependency sass to v1.77.4

This MR contains the following updates:

Package	Type	Update	Change
sass	dependencies	patch	1.77.2 -> 1.77.4

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Release Notes

sass/dart-sass (sass)

v1.77.4

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Embedded Sass

• Support passing Version input for fatalDeprecations as string over embedded protocol.

• Fix a bug in the JS Embedded Host where Version could be incorrectly accepted as input for silenceDeprecations and futureDeprecations in pure JS.

v1.77.3

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Dart API

• Deprecation.duplicateVariableFlags has been deprecated and replaced with Deprecation.duplicateVarFlags to make it consistent with the duplicate-var-flags name used on the command line and in the JS API.

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