Update project jquery.dotdotdot to v1.6.15

libgrabber updated project jquery.dotdotdot to v1.6.15.

@BeSite

### Metadata information

```json
{
  "metadata": {
    "packageManager": "github",
    "name": "jquery.dotdotdot",
    "repo": "BeSite/jQuery.dotdotdot",
    "files": {
      "basePath": "src/js/",
      "include": ["*.js"],
      "exclude": []
    },
    "path": "/home/jsdelivr/files/jquery.dotdotdot",
    "localVersions": ["1.5.10", "1.6.7", "1.6.13", "1.6.14"],
    "remoteVersions": ["v1.6.7", "v1.6.8", "v1.6.9", "v1.6.10", "v1.6.11", "v1.6.12", "v1.6.13", "v1.6.14", "v1.6.15"],
    "branchVersions": []
  },
  "version": "v1.6.15",
  "updated": true,
  "updatePath": "/home/jsdelivr/files/jquery.dotdotdot/1.6.15",
  "branch": "jquery.dotdotdot/v1.6.15"
}
```