[Bug]: Lockfile v5 not supported?

### Problem description

After adding a dependency using Deno v2.3.1, the "version" field in `deno.lock` has been bumped to "5". Other than that I can't spot any significant differences.

When Deno Deploy attempted to update the production deployment from GitHub repo, it failed with this message:

```
Failed to deploy:

Failed reading lockfile at '/src/deno.lock'
```

### Steps to reproduce

Update the "version" field of a `deno.lock` file to "5" and attempt to deploy.

### Expected behavior

Deployment succeeds.

### Environment

_No response_

### Possible solution

_No response_

### Additional context

_No response_