Update project highcharts to v4.0.4

libgrabber updated project highcharts to v4.0.4.

@highslide-software

### Metadata information

```json
{
  "metadata": {
    "packageManager": "github",
    "name": "highcharts",
    "repo": "highslide-software/highcharts-release",
    "files": {
      "exclude": ["README.md", "bower.json"],
      "include": ["**/*"]
    },
    "path": "/home/jsdelivr/files/highcharts",
    "localVersions": ["2.2.4", "2.3.0", "2.3.2", "2.3.3", "3.0.1", "3.0.4", "3.0.7", "3.0.9", "4.0.0", "4.0.1", "4.0.3"],
    "remoteVersions": ["v3.0.10", "v4.0.0", "v4.0.1", "v4.0.3", "v4.0.4"],
    "branchVersions": []
  },
  "version": "v4.0.4",
  "updated": true,
  "updatePath": "/home/jsdelivr/files/highcharts/4.0.4",
  "branch": "highcharts/v4.0.4"
}
```