Migrate to use Dart Sass instead of Node Sass

[deiga]

Description

Migrate node-sass usage to Dart Sass library

Changes/Tasks

• Changed dependencies

Motivation and Context

• node-sass has been deprecated (https://sass-lang.com/blog/libsass-is-deprecated) and it is recommended to switch to use Dart Sass instead.
• This allows users to actually use all SASS language features as node-sass has been lagging behind in feature parity for years.
• This change is required for us to support Node 16

Screenshots (if appropriate):

Types of changes

• Refactoring/add tests (refactoring or adding test which isn't a fix or add a feature)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• I have updated the documentation accordingly
• I have updated the CHANGELOG with a summary of my changes
• My changes have tests around them

[SleeplessByte]

Thanks! ❤️

[jeanlescure]

@deiga @SleeplessByte I think you guys forgot to release a new version of this plugin. It is still on 7.3.0 (which was released a year ago on npm). I was trying to use react-static-plugin-sass on a project under Node 16 but it breaks due to a problem on the old version of node-sass that the published version of react-static-plugin-sass depends on.