Add confirmed venues for Hacker Toolbox

[netlify[bot]]

✅ Deploy Preview for nushackers ready!

Name	Link
🔨 Latest commit	673cc2781539950960d5b237f5d4c74e216b96ee
🔍 Latest deploy log	https://app.netlify.com/sites/nushackers/deploys/64ea13879f23d00008c336af
😎 Deploy Preview	https://deploy-preview-582--nushackers.netlify.app
📱 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 configuration.