Update project jquery.gray to v1.4.0

libgrabber updated project jquery.gray to v1.4.0.

@karlhorky

### Metadata information

```json
{
  "metadata": {
    "packageManager": "github",
    "name": "jquery.gray",
    "repo": "karlhorky/gray",
    "files": {
      "include": ["css/gray.min.css", "js/jquery.gray.min.js"],
      "exclude": []
    },
    "path": "/home/jsdelivr/files/jquery.gray",
    "localVersions": ["1.3.2", "1.3.3", "1.3.4", "1.3.5", "1.3.6"],
    "remoteVersions": ["v1.0.0", "v1.1.0", "v1.1.1", "v1.2.0", "v1.3.0", "v1.3.1", "v1.3.2", "v1.3.3", "v1.3.4", "v1.3.5", "v1.3.6", "v1.4.0"],
    "branchVersions": []
  },
  "version": "v1.4.0",
  "updated": true,
  "updatePath": "/home/jsdelivr/files/jquery.gray/1.4.0",
  "branch": "jquery.gray/v1.4.0"
}
```