Bump sassc from 2.2.1 to 2.4.0

[dependabot]

Bumps sassc from 2.2.1 to 2.4.0.

Changelog

Sourced from sassc's changelog.

• 2.4.0

  • Update libsass to 3.6.4
  • Use FFI::MemoryPointer instead of libc's malloc()
  • Test against Ruby 2.7.0

• 2.3.0

  • Fix rake gem:native task
  • disable lto flag for darwin + nix
  • Sort input file list
  • Set appropriate encoding for source_map
  • allow passing functions directly
  • always dispose data context
  • Update libsass to 3.6.3
  • Restore strip symbols
  • Default --march-tune-native to false
  • Fix compile issue on Mac OS X
  • Test on TruffleRuby in TravisCI
  • Use RbConfig::MAKEFILE_CONFIG['DLEXT'] instead of hardcoding extensions

• 2.2.1

  • Fix LoadError on some non-rvm environments

• 2.2.0

  • Do not build precompiled gems for Linux

• 2.1.0

  • Equivalent to 2.1.0.pre3

• 2.1.0.pre3

  • extconf.rb: Always write VERSION if we have .git
  • Update libsass to 3.6.1

• 2.1.0.pre2

  • Reduce Ruby warnings
  • prefer equal? to determine object identity
  • Link C/C++ stdlib statically for binary gems

• 2.1.0.pre1

  • Update Libsass to 3.6.0
  • Support old Ruby versions

• 2.0.1

  • Relax FFI dependency

• 2.0.0

  • Remove dependency on Ruby Sass
  • frozen_string_literal all files

• 1.12.1

  • Downgrade to libsass 3.5.2 to fix css imports

• 1.12.0

  • Update Libsass to 3.5.4
  • bundler is a development dependency

• 1.11.4

  • Fix Value::List related issue with sass 3.5.0

• 1.11.3

  • Require Sass::Deprecation module

• 1.11.2

  • Update to libsass 3.4.3

... (truncated)

Commits

• 2adab27 version bump
• 4bd764f Merge pull request #205 from larskanis/remove-libc
• 1039a4d Merge pull request #193 from okuramasafumi/test-against-ruby-27
• 9256d01 Merge pull request #199 from ahorek/libsass_update_364
• d6d9dab Use FFI::MemoryPointer instead of libc's malloc()
• 38cbb78 Update libsass to 3.6.4
• 7df1271 update changelog
• c51169a version bump 2.3.0
• 1bc1c54 Merge pull request #196 from casperisfine/drop-32bit-targets
• ee8154d Fix rake gem:native task
• Additional commits viewable in compare view

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