Neptune Analytics Template - Update template type

[andy-k-improving]

Description

This is a PR to follow up on the error caused on the current build, which Mixed is no longer one of the accepted type.
https://github.com/vercel/examples/actions/runs/22906043253/job/66464858165#step:7:51

Fetching template with slug "aws-neptune-analytics-nextjs-api-routes"...
Template validation failed:
[
  Error: Error in `aws-neptune-analytics-nextjs-api-routes` template -- "type" has an unknown item: "Mixed", it must be one of "Starter, Ecommerce, Blog, AI, Authentication, Edge Middleware, Edge Config, Portfolio, Virtual Event, SaaS, Documentation, CMS, Cron, Security, Realtime Apps, Monorepos, Web3, Admin Dashboard, Vercel Firewall, Backend, Multi-Tenant Apps, Microfrontends, Marketing Sites, CDN"

Demo URL

Type of Change

• New Example
• Example updates (Bug fixes, new features, etc.)
• Other (changes to the codebase, but not to examples)

New Example Checklist

• 🛫 npm run new-example was used to create the example
• 📚 The template wasn't used but I carefuly read the Adding a new example steps and implemented them in the example
• 📱 Is it responsive? Are mobile and tablets considered?

[vercel]

@andy-k-improving is attempting to deploy a commit to the Vercel Examples Team on Vercel.

A member of the Team first needs to authorize it.

[vercel]

Deployment failed with the following error:

The `vercel.ts` schema validation failed with the following message: `rewrites[0]` missing required property `destination`

Learn More: https://vercel.com/docs/concepts/projects/project-configuration

[andy-k-improving]

Hi @plmrry @amyegan
Would you mind to have a look on this, this is a patch to address the build error and a follow up of #1376
Thanks,

[andy-k-improving]

vercel.ts

I believe this is related to the cms-bulk-redirects example instead, as there is no vercel.ts present under the Neptune Analytics example