Update project slimscroll to v1.3.3

libgrabber updated project slimscroll to v1.3.3.

@rochal

### Metadata information

```json
{
  "metadata": {
    "packageManager": "github",
    "name": "slimscroll",
    "repo": "rochal/jQuery-slimScroll",
    "files": {
      "include": ["jquery.slimscroll.js", "jquery.slimscroll.min.js"],
      "exclude": []
    },
    "path": "/home/jsdelivr/files/slimscroll",
    "localVersions": ["0.5.0", "0.6.5", "1.3.1", "1.3.2"],
    "remoteVersions": ["v0.2.1", "v0.2.3", "v0.2.4", "v0.2.5", "v0.2.6", "v0.2.7", "v0.3.0", "v0.4.0", "v0.4.3", "v0.4.4", "v0.5.0", "v0.6.0", "v0.6.5", "v1.0.0", "v1.0.1", "v1.0.2", "v1.0.3", "v1.0.4", "v1.0.5", "v1.0.6", "v1.0.7", "v1.0.8", "v1.0.9", "v1.1.0", "v1.1.1", "v1.2.0", "v1.3.0", "v1.3.1", "v1.3.2", "v1.3.3"],
    "branchVersions": []
  },
  "version": "v1.3.3",
  "updated": true,
  "updatePath": "/home/jsdelivr/files/slimscroll/1.3.3",
  "branch": "slimscroll/v1.3.3"
}
```