👷 Move website build chain to ESM

[dubzzz]

Category:

• [ ] ✨ Introduce new features
• [ ] 📝 Add or update documentation
• [ ] ✅ Add or update tests
• [ ] 🐛 Fix a bug
• [ ] 🏷️ Add or update types
• [ ] ⚡️ Improve performance
• [ ] Other(s): ...

Potential impacts:

• [ ] Generated values
• [ ] Shrink values
• [ ] Performance
• [ ] Typings
• [ ] Other(s): ...