[Schema Inaccuracy] pull request id documented as int but missing format int64

# Schema Inaccuracy

Pull request simple id field is documented as a int but should be a string string this is what the API returns

## Expected

See inacurracy

## Reproduction Steps

```shell
# or any repo really
gh pr list -R baywet/demo --json id
```

```json
[
  {
    "id": "PR_kwDOIJ9Ix86M10xO"
  },
  {
    "id": "PR_kwDOIJ9Ix86M10mq"
  }
]
```