chore: update dependencies and use pnpm 9

[phoenix-ru]

🔗 Linked issue

❓ 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)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Migrate to PNPM 9 and update dependencies

📝 Checklist

• I have linked an issue or discussion.
• I have added tests (if possible).
• I have updated the documentation accordingly.

[zoey-kaiser]

Tested:

• ✅ Locally built
• ✅ Could start all playground
• ✅ Linting and Typecheck work locally
• ✅ Tests all work locally
• ✅ Docs still work

Therefore: Approved! Feel free to merge. I also have to say that this upgrade at least makes the project feel faster. Unsure if real benchmarks would also support this!