Update dependency sass to v1.68.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sass	1.66.1 -> 1.68.0

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Release Notes

sass/dart-sass (sass)

v1.68.0

Compare Source

• Fix the source spans associated with the abs-percent deprecation.

JS API

• Non-filesystem importers can now set the nonCanonicalScheme field, which
  declares that one or more URL schemes (without :) will never be used for
  URLs returned by the canonicalize() method.

• Add a containingUrl field to the canonicalize() and findFileUrl()
  methods of importers, which is set to the canonical URL of the stylesheet that
  contains the current load. For filesystem importers, this is always set; for
  other importers, it's set only if the current load has no URL scheme, or if
  its URL scheme is declared as non-canonical by the importer.

Dart API

• Add AsyncImporter.isNonCanonicalScheme, which importers (async or sync) can
  use to indicate that a certain URL scheme will never be used for URLs returned
  by the canonicalize() method.

• Add AsyncImporter.containingUrl, which is set during calls to the
  canonicalize() method to the canonical URL of the stylesheet that contains
  the current load. This is set only if the current load has no URL scheme, or
  if its URL scheme is declared as non-canonical by the importer.

Embedded Sass

• The CalculationValue.interpolation field is deprecated and will be removed
  in a future version. It will no longer be set by the compiler, and if the host
  sets it it will be treated as equivalent to CalculationValue.string except
  that "(" and ")" will be added to the beginning and end of the string
  values.

• Properly include TypeScript types in the sass-embedded package.

v1.67.0

Compare Source

• All functions defined in CSS Values and Units 4 are now once again parsed as
  calculation objects: round(), mod(), rem(), sin(), cos(), tan(),
  asin(), acos(), atan(), atan2(), pow(), sqrt(), hypot(),
  log(), exp(), abs(), and sign().

  Unlike in 1.65.0, function calls are not locked into being parsed as
  calculations or plain Sass functions at parse-time. This means that
  user-defined functions will take precedence over CSS calculations of the same
  name. Although the function names calc() and clamp() are still forbidden,
  users may continue to freely define functions whose names overlap with other
  CSS calculations (including abs(), min(), max(), and round() whose
  names overlap with global Sass functions).

• Breaking change: As a consequence of the change in calculation parsing
  described above, calculation functions containing interpolation are now parsed
  more strictly than before. However, almost all interpolations that would
  have produced valid CSS will continue to work. The only exception is
  #{$variable}% which is not valid in Sass and is no longer valid in
  calculations. Instead of this, either use $variable directly and ensure it
  already has the % unit, or write ($variable * 1%).

• Potentially breaking bug fix: The importer used to load a given file is no
  longer used to load absolute URLs that appear in that file. This was
  unintented behavior that contradicted the Sass specification. Absolute URLs
  will now correctly be loaded only from the global importer list. This applies
  to the modern JS API, the Dart API, and the embedded protocol.

Embedded Sass

• Substantially improve the embedded compiler's performance when compiling many
  files or files that require many importer or function call round-trips with
  the embedded host.

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