Github Graphql returns none for author if dependabot PR

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Package ecosystem

npm

### Package manager version

n/a

### Language version

n/a

### Manifest location and content before the Dependabot update

n/a

### dependabot.yml content

n/a

### Updated dependency

n/a

### What you expected to see, versus what you actually saw

Example:

```
query pullRequest {
repository(owner: "broksonic21", name: "nx-dependabot-increase") {
pullRequests(states: OPEN, first: 1) {
nodes {
title
isDraft
url
author {
... on User {
email
name
login
}
}
}
}
}
```

Gets

```
{
"data": {
"repository": {
"pullRequests": {
"nodes": [
{
"title": "Bump follow-redirects from 1.15.5 to 1.15.6",
"isDraft": false,
"url": "https://github.com/broksonic21/nx-dependabot-increase/pull/8",
"author": {}
}
]
}
}
}
}
```

With an empty author

Is there a syntax which can read dependabot as the author?

### Native package manager behavior

_No response_

### Images of the diff or a link to the PR, issue, or logs

_No response_

### Smallest manifest that reproduces the issue

_No response_