feat: Upgrade playground for v0.5.13

[netlify[bot]]

✅ Deploy preview ready! 🌾

Name	Link
🔨 Latest commit	2ae53e848946af49048682d842a79be9dde1175f
🔍 Latest deploy log	https://app.netlify.com/sites/grain-lang/deploys/63baffd2ce4cc2000898edf5
😎 Deploy Preview	https://deploy-preview-344--grain-lang.netlify.app/try
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site settings.