@jgthms this is a bugfix.

Proposed solution

Replaces the deprecated global built-in unquote() function with string.unquote() to align with Dart Sass 3.0 requirements. This change affects the getRgbaVar() function in utilities/css-variables.scss, which supports Bulma’s CSS variable parsing.

Tradeoffs

• Minimal impact to CSS output, but this assumes use of a modern Dart Sass environment.
• Older Sass versions may not support namespaced functions, so contributors on legacy tooling should be aware.
• Avoids future build warnings while preserving clarity for maintainers.

Testing Done

None.

Function usage has been validated in Dart Sass and complies with modern syntax guidelines.

Changelog updated?

No.

Related: buefy/buefy#4093