fix: hash mismatch for npmDepsHash

[k3yss]

Running nix build after nix flake init --template "github:DeterminateSystems/zero-to-nix#javascript-pkg" gives a hash mismatch error. This pull request addresses that and adds the correct hash making the environment reproducible.

[netlify[bot]]

✅ Deploy Preview for zero-to-nix ready!

Name	Link
🔨 Latest commit	f80e4299324698ba97bd2a8dc5d20880bbc5178c
🔍 Latest deploy log	https://app.netlify.com/sites/zero-to-nix/deploys/668c0dbb84ff9500088b0132
😎 Deploy Preview	https://deploy-preview-343--zero-to-nix.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.

[lucperkins]

@k3yss Could you rebase and push those changes?

[k3yss]

@lucperkins done!