Update project jquery.waitforimages to 1.6.4

libgrabber updated project jquery.waitforimages to 1.6.4.

@alexanderdickson

### Metadata information

```json
{
  "metadata": {
    "packageManager": "github",
    "name": "jquery.waitforimages",
    "repo": "alexanderdickson/waitForImages",
    "files": {
      "basePath": "dist/",
      "include": ["**/*"],
      "exclude": []
    },
    "path": "/home/jsdelivr/files/jquery.waitforimages",
    "localVersions": ["1.4.2"],
    "remoteVersions": ["1.3.1", "1.3.2", "1.3.3", "1.3.4", "1.4.1", "1.4.2", "1.6.1", "1.6.2", "1.6.3", "1.6.4"],
    "branchVersions": []
  },
  "version": "1.6.4",
  "updated": true,
  "updatePath": "/home/jsdelivr/files/jquery.waitforimages/1.6.4",
  "branch": "jquery.waitforimages/1.6.4"
}
```