build: update sass to version 1.28.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
sass	dependencies	minor	1.27.0 -> 1.28.0
sass	devDependencies	minor	1.27.0 -> 1.28.0

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Release Notes

sass/dart-sass

v1.28.0

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• Add a color.hwb() function to sass:color that can express colors in HWB format.

• Add color.whiteness() and color.blackness() functions to sass:color
  to get a color's HWB whiteness and blackness components.

• Add $whiteness and $blackness parameters to color.adjust(),
  color.change(), and color.scale() to modify a color's HWB whiteness
  and blackness components.

Dart API

• Add HWB support to the SassColor class, including a SassColor.hwb()
  constructor, whiteness and blackness getters, and a changeHwb() method.

v1.27.2

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• No user-visible changes.

v1.27.1

Compare Source

• Potentially breaking bug fix: meta.load-css() now correctly uses the
  name $url for its first argument, rather than $module.

• Don't crash when using Infinity or NaN as a key in a map.

• Emit a proper parse error for a = with no right-hand side in a function.

• Avoid going exponential on certain recursive @extend edge cases.

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