Update dependency sass to v1.56.0 (develop)

This MR contains the following updates:

Package	Type	Update	Change
sass	devDependencies	minor	1.55.0 -> 1.56.0

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Release Notes

sass/dart-sass

v1.56.0

Compare Source

• Potentially breaking change: To match the CSS spec, SassScript expressions beginning with not or ( are no longer supported at the beginning of parenthesized sections of media queries. For example,

  @​media (width >= 500px) and (not (grid))

  will now be emitted unchanged, instead of producing

  @​media (width >= 500px) and (false)

  See the Sass website for details.

• Potentially breaking bug fix: Angle units like rad or turn are now properly converted to equivalent deg values for hsl(), hsla(), adjust-hue(), color.adjust(), and color.change().

  See the Sass website for details.

• Fix indentation for selectors that span multiple lines in a @media query.

• Emit a deprecation warning when passing $alpha values with units to color.adjust() or color.change(). This will be an error in Dart Sass 2.0.0.

  See the Sass website for details.

• Emit a deprecation warning when passing a $weight value with no units or with units other than % to color.mix(). This will be an error in Dart Sass 2.0.0.

  See the Sass website for details.

• Emit a deprecation warning when passing $n values with units to list.nth() or list.set-nth(). This will be an error in Dart Sass 2.0.0.

  See the Sass website for details.

• Improve existing deprecation warnings to wrap /-as-division suggestions in calc() expressions.

• Properly mark the warning for passing numbers with units to random() as a deprecation warning.

• Fix a bug where @extend could behave unpredicatably when used along with meta.load-css() and shared modules that contained no CSS themselves but loaded CSS from other modules.

Dart API

• Emit a deprecation warning when passing a sassIndex with units to Value.sassIndexToListIndex(). This will be an error in Dart Sass 2.0.0.

JS API

• Importer results now validate whether contents is actually a string type.

• Importer result argument errors are now rendered correctly.

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