Update project headroomjs to v0.7.0

libgrabber updated project headroomjs to v0.7.0.

@WickyNilliams

### Metadata information

```json
{
  "metadata": {
    "packageManager": "github",
    "name": "headroomjs",
    "repo": "WickyNilliams/headroom.js",
    "files": {
      "basePath": "dist",
      "include": ["*.min.js"],
      "exclude": []
    },
    "path": "/home/jsdelivr/files/headroomjs",
    "localVersions": ["0.5.0", "0.6.0"],
    "remoteVersions": ["v0.3.9", "v0.4.0", "v0.5.0", "v0.6.0", "v0.7.0-docs", "v0.7.0"],
    "branchVersions": []
  },
  "version": "v0.7.0",
  "updated": true,
  "updatePath": "/home/jsdelivr/files/headroomjs/0.7.0",
  "branch": "headroomjs/v0.7.0"
}
```