Update dependency sass to v1.59.1

This MR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sass	1.58.3 -> 1.59.1

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Release Notes

sass/dart-sass

v1.59.1

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• No user-visible changes.

v1.59.0

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Command Line Interface

• Added a new --fatal-deprecation flag that lets you treat a deprecation warning as an error. You can pass an individual deprecation ID (e.g. slash-div) or you can pass a Dart Sass version to treat all deprecations initially emitted in that version or earlier as errors.

• New --future-deprecation flag that lets you opt into warning for use of certain features that will be deprecated in the future. At the moment, the only option is --future-deprecation=import, which will emit warnings for Sass @import rules, which are not yet deprecated, but will be in the future.

Dart API

• New Deprecation enum, which contains the different current and future deprecations used by the new CLI flags.

• The compile methods now take in fatalDeprecations and futureDeprecations parameters, which work similarly to the CLI flags.

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