fix: build errors

[cbernat]

Fixed two errors on build

• On del-cli module [ERR_REQUIRE_ESM]: Must use import to load ES Module. Fixed using node 12.20.0 I've choosen the version according to this library debate
• Minifying images '.' is not recognized as an internal or external command --> using npx instead of running the module directly

#Checklist

• Check if there is a new color.
• Create the color variable in the _colors.scss file.
• Follow the color nomenclature.
• Create the color class with its variable.
• Create the color component in the html, show the name, color class and its exadecimal.

[silsanchez8]

Excelente Ceci!!! 👏 💪 💯

[andresmoschini]

🎉 This PR is included in version 3.104.6 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀