chore(deps): update dependency sass to v1.77.2

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sass	1.71.1 -> 1.77.2

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Release Notes

sass/dart-sass (sass)

v1.77.2

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• Don't emit deprecation warnings for functions and mixins beginning with __.

• Allow user-defined functions whose names begin with _ and otherwise look
  like vendor-prefixed functions with special CSS syntax.

Command-Line Interface

• Properly handle the --silence-deprecation flag.

• Handle the --fatal-deprecation and --future-deprecation flags for
  --interactive mode.

v1.77.1

Compare Source

• Fix a crash that could come up with importers in certain contexts.

v1.77.0

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• Don't throw errors for at-rules in keyframe blocks.

v1.76.0

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• 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.

v1.75.0

Compare Source

• Fix a bug in which stylesheet canonicalization could be cached incorrectly
  when custom importers or the Node.js package importer made decisions based on
  the URL of the containing stylesheet.

JS API

• Allow importer to be passed without url in StringOptionsWithImporter.

v1.74.1

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• No user-visible changes.

v1.72.0

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• Support adjacent /s without whitespace in between when parsing plain CSS
  expressions.

• Allow the Node.js pkg: importer to load Sass stylesheets for package.json
exports field entries without extensions.

• When printing suggestions for variables, use underscores in variable names
  when the original usage used underscores.

JavaScript API

• Properly resolve pkg: imports with the Node.js package importer when
  arguments are passed to the JavaScript process.

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[coveralls]

coverage: 94.441%. remained the same
when pulling d4461af on renovate/sass-1.x-lockfile
into 279e4ee on master.

[coveralls]

coverage: 94.441%. remained the same
when pulling 948260d on renovate/sass-1.x-lockfile
into 279e4ee on master.