Update project dropzone.js to v3.10.2

libgrabber updated project dropzone.js to v3.10.2.

@enyo

### Metadata information

```json
{
  "metadata": {
    "packageManager": "github",
    "name": "dropzone.js",
    "repo": "enyo/dropzone",
    "files": {
      "basePath": "downloads/",
      "exclude": ["readme.md", "css/stylus/*"],
      "include": ["**/*"]
    },
    "path": "/home/jsdelivr/files/dropzone",
    "localVersions": [],
    "remoteVersions": ["v3.0.1", "v3.1.0", "v3.2.0", "v3.3.0", "v3.4.0", "v3.4.1", "v3.5.0", "v3.5.1", "v3.5.2", "v3.5.3", "v3.6.0", "v3.6.1", "v3.6.2", "v3.7.0", "v3.7.1", "v3.7.2", "v3.7.3", "v3.7.4", "v3.8.0", "v3.8.1", "v3.8.2", "v3.8.3", "v3.8.4", "v3.8.5", "v3.8.6", "v3.8.7", "v3.9.0", "v3.10.0", "v3.10.1", "v3.10.2"],
    "branchVersions": []
  },
  "version": "v3.10.2",
  "updated": true,
  "updatePath": "/home/jsdelivr/files/dropzone/3.10.2",
  "branch": "dropzone.js/v3.10.2"
}
```