Update dependency sass to v1.78.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sass	1.77.8 -> 1.78.0

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Release Notes

sass/dart-sass (sass)

v1.78.0

Compare Source

• The meta.feature-exists function is now deprecated. This deprecation is
  named feature-exists.

• Fix a crash when using @at-root without any queries or children in the
  indented syntax.

JS API

• Backport the deprecation options (fatalDeprecations, futureDeprecations,
  and silenceDeprecations) to the legacy JS API. The legacy JS API is itself
  deprecated, and you should move off of it if possible, but this will allow
  users of bundlers and other tools that are still using the legacy API to
  still control deprecation warnings.

• Fix a bug where accessing SourceSpan.url would crash when a relative URL was
  passed to the Sass API.

Embedded Sass

• Explicitly expose a sass executable from the sass-embedded npm package.
  This was intended to be included in 1.63.0, but due to the way
  platform-specific dependency executables are installed it did not work as
  intended. Now users can run npx sass for local installs or just sass when
  sass-embedded is installed globally.

• Add linux-riscv64, linux-musl-riscv64, and android-riscv64 support for the
  sass-embedded npm package.

• Fix an edge case where the Dart VM could hang when shutting down when requests
  were in flight.

• Fix a race condition where the embedded host could fail to shut down if it was
  closed around the same time a new compilation was started.

• Fix a bug where parse-time deprecation warnings could not be controlled by
  the deprecation options in some circumstances.

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