Update dependency sass to v1.86.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sass	1.85.1 -> 1.86.0

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Release Notes

sass/dart-sass (sass)

v1.86.0

Compare Source

• Add support for % as an expression in its own right. It will still be parsed
  as the modulo operator when between two other expressions, but in any other
  context it will be an expression whose value is the unquoted string %.

• Consider attr() to be a special number function that can be used as a
  channel in color functions.

• Deprecate user-defined functions named type() so that we can eventually
  support the new CSS type() function.

Dart API

• Increase the minimum Dart SDK to 3.6.0.

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[basil]

De minimis