Bump sass from 1.83.4 to 1.84.0 in the sass group

[dependabot]

Bumps the sass group with 1 update: sass.

Updates sass from 1.83.4 to 1.84.0

Changelog

Sourced from sass's changelog.

1.84.0

• Allow newlines in whitespace in the indented syntax.

• Potentially breaking bug fix: Selectors with unmatched brackets now always produce a parser error. Previously, some edge cases like [foo#{"]:is(bar"}) {a: b} would compile without error, but this was an unintentional bug.

• Fix a bug in which various Color Level 4 functions weren't allowed in plain CSS.

• Fix the error message for @extend without a selector and possibly other parsing edge-cases in contexts that allow interpolation.

Embedded Host

• Fixed the implementation of the SassBoolean type to adhere to the spec, now using a class instead of an interface.

Commits

• ae4b757 [Indented syntax improvements] Dart implementation (#2467)
• d973e3e Allow Color 4 functions in plain CSS (#2505)
• aed7839 Add support for the @content rule (#2501)
• 3b46880 Add changelog for embedded host fix (#2500)
• 2cedc62 Add support for @import (#2498)
• f4908e7 Fix a crash when writing @extend without a selector (#2499)
• 870ba06 Bump bufbuild/buf-setup-action in /.github/util/initialize (#2495)
• aba11b8 Bump postcss from 8.4.49 to 8.5.1 in /pkg/sass-parser (#2496)
• See full diff in compare view

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[tdonohue]

👍 Tested via #3970