Update project sweep to 1.2.1

libgrabber updated project sweep to 1.2.1.

@rileyjshaw

### Metadata information

```json
{
  "metadata": {
    "packageManager": "bower",
    "name": "sweep",
    "repo": "rileyjshaw/sweep",
    "files": {
      "basePath": "bin/",
      "include": ["sweep.min.js"],
      "exclude": []
    },
    "path": "/home/jsdelivr/files/sweep",
    "localVersions": ["1.1.0", "1.2.0"],
    "remoteVersions": ["1.1.0", "1.2.0", "1.2.1"],
    "branchVersions": []
  },
  "version": "1.2.1",
  "updated": true,
  "updatePath": "/home/jsdelivr/files/sweep/1.2.1",
  "branch": "sweep/1.2.1"
}
```