Default tests are not running 😞 

Hey, default tests are failling

<img width="723" alt="image" src="https://github.com/mithro/autolabeler/assets/3717296/6f931734-4e58-4c3c-91b5-cdaf197109a4">

Looking at Github API 👉 https://docs.github.com/en/rest/issues/labels?apiVersion=2022-11-28#add-labels-to-an-issue

Body have to be:
```json
{"labels": ["test", "config"]}
```