The following RuboCop extension libraries are installed but not loaded in config:   * rubocop-rake

```cmd
116 files inspected, no offenses detected

The following RuboCop extension libraries are installed but not loaded in config:
  * rubocop-rake

You can opt out of this message by adding the following to your config (see https://docs.rubocop.org/rubocop/extensions.html#extension-suggestions for more options):
  AllCops:
    SuggestExtensions: false
```