Update project walkway to v0.0.4

libgrabber updated project walkway to v0.0.4.

@ConnorAtherton

### Metadata information

```json
{
  "metadata": {
    "packageManager": "github",
    "name": "walkway",
    "repo": "ConnorAtherton/walkway",
    "files": {
      "include": ["walkway.min.js"],
      "exclude": []
    },
    "path": "/home/jsdelivr/files/walkway",
    "localVersions": ["0.0.1"],
    "remoteVersions": ["v0.0.1", "v0.0.4"],
    "branchVersions": []
  },
  "version": "v0.0.4",
  "updated": true,
  "updatePath": "/home/jsdelivr/files/walkway/0.0.4",
  "branch": "walkway/v0.0.4"
}
```