Update project listgroup.js to v1.1.1

libgrabber updated project listgroup.js to v1.1.1.

@rickardn

### Metadata information

```json
{
  "metadata": {
    "packageManager": "github",
    "name": "listgroup.js",
    "repo": "rickardn/listgroup.js",
    "files": {
      "include": ["listgroup.min.js"],
      "exclude": []
    },
    "path": "/home/jsdelivr/files/bootstrap.listgroup",
    "localVersions": [],
    "remoteVersions": ["v1.0.0", "v1.1.0", "v1.1.1"],
    "branchVersions": ["v1.1.0"]
  },
  "version": "v1.1.1",
  "updated": true,
  "updatePath": "/home/jsdelivr/files/bootstrap.listgroup/1.1.1",
  "branch": "listgroup.js/v1.1.1"
}
```