Update dependency sass to v1.71.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sass	1.71.0 -> 1.71.1

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Release Notes

sass/dart-sass (sass)

v1.71.1

Compare Source

Command-Line Interface

• Ship the musl Linux release with the proper Dart executable.

JavaScript API

• Export the NodePackageImporter class in ESM mode.

• Allow NodePackageImporter to locate a default directory even when the
  entrypoint is an ESM module.

Dart API

• Make passing a null argument to NodePackageImporter() a static error rather
  than just a runtime error.

Embedded Sass

• In the JS Embedded Host, properly install the musl Linux embedded compiler
  when running on musl Linux.

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