Move to `Dart-sass`

[aswanson-nr]

Description

Our current Sass implementation makes use of the node-sass project, which is now deprecated and in maintenance mode. The suggested upgrade path is dart-sass which is compiled to javascript in the sass NPM package.

Benefits

• Receive updates to the sass ecosystem
• Allows the site to work on arm64 architectures (M1 macs and raspberry pis!!)

Links

• Node-sass
• Dart-sass
• Dart-sass npm package
• Gatsby-plugin-sass

Implementation

    {
      resolve: `gatsby-plugin-sass`,
      options: {
        implementation: require('sass'),
      },
    },

AC

• [x] Node-sass is replaced by sass
• [x] gatsby-plugin-sass is update to v5.9.0
• [x] The sass styling continues to work as normal

[nr-opensource-bot]

:tada: This issue has been resolved in version 1.20.5 :tada:

The release is available on GitHub release

Your semantic-release bot :package::rocket: