Description of the Change

• Update NPM Dependencies, refer changelog
• Remove grunt phpunit task, we have composer in the repo
• Replace ruby sass with dart sass, deprecated

How to test the Change

1. Run npm ci; npm run build
2. Ensure the build runs successfully
3. Run npm run start
4. Modify and save a SCSS file; ensure the build is triggered
5. Modify and save assets/js/src/scripts.js; ensure the build is triggered
6. Go through each step in the critical flows https://github.com/10up/eight-day-week/wiki/Testing-instructions-for-critical-flows

Changelog Entry

Changed - Update grunt-contrib-uglify to 5.2.2
Changed - Update grunt-contrib-cssmin to 5.0.0
Changed - Update grunt-contrib-concat to 2.1.0
Changed - Update grunt-contrib-compress to 2.0.0
Changed - Update grunt-contrib-clean to 2.0.1
Changed - Update grunt to 1.6.1
Changed - Update Sass to Dart Sass.
Changed - Replace grunt-autoprefixer with grunt-postcss.
Developer - Update Cypress config following wp-env update.
Developer - Update cypress to 15.9.0
Developer - Update @10up/cypress-wp-utils to 0.6.0
Developer - Update @wordpress/env to 10.38.0
Developer - Update qunit to 2.25.0
Developer - Update grunt-wp-readme-to-markdown to 2.1.0
Developer - Remove grunt-phpunit, available via composer.
Developer - Add key grunt scripts to package file.
Developer - Update dependencies via npm audit fix.

Credits

Props @peterwilsoncc

Checklist:

• I agree to follow this project's Code of Conduct.
• I have updated the documentation accordingly.
• I have added Critical Flows, Test Cases, and/or End-to-End Tests to cover my change.
• All new and existing tests pass.