chore: migrate to eslint v9

[shinGangan]

🔗 Linked issue

closed #144 .

❓ Type of change

• [ ] 📖 Documentation (updates to the documentation, readme, or JSdoc annotations)
• [ ] 🐞 Bug fix (a non-breaking change that fixes an issue)
• [ ] 👌 Enhancement (improving an existing functionality like performance)
• [ ] ✨ New feature (a non-breaking change that adds functionality)
• [x] 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• [ ] ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

migrated ESLint v9 using eslint-config-unjs v0.3.2

📝 Checklist

• [x] I have linked an issue or discussion.
• [ ] I have updated the documentation accordingly.

[shinGangan]

Hi @pi0 ! This PR is low priority, so please review when you have a time 🙏

[pi0]

THank you for PR ❤️ it is updated in main (automated via unjs/codeup)