Update project rivets to v0.7.0-rc1

libgrabber updated project rivets to v0.7.0-rc1.

@mikeric

### Metadata information

```json
{
  "metadata": {
    "packageManager": "github",
    "name": "rivets",
    "repo": "mikeric/rivets",
    "files": {
      "basePath": "dist/",
      "include": ["rivets.min.js"],
      "exclude": []
    },
    "path": "/home/jsdelivr/files/rivets",
    "localVersions": ["0.6.9"],
    "remoteVersions": ["v0.4.6", "v0.4.7", "v0.4.8", "v0.4.9", "v0.5.0", "v0.5.1", "v0.5.2", "v0.5.3", "v0.5.4", "v0.5.5", "v0.5.6", "v0.5.7", "v0.5.8", "v0.5.9", "v0.5.10", "v0.5.11", "v0.5.12", "v0.5.13", "v0.6.0", "v0.6.1", "v0.6.2", "v0.6.3", "v0.6.4", "v0.6.5", "v0.6.6", "v0.6.7", "v0.6.8", "v0.6.9", "v0.6.10", "v0.7.0-rc1"],
    "branchVersions": []
  },
  "version": "v0.7.0-rc1",
  "updated": true,
  "updatePath": "/home/jsdelivr/files/rivets/0.7.0-rc1",
  "branch": "rivets/v0.7.0-rc1"
}
```