https://warehouse.pypa.io/api-reference/json.html#project

The releases key on this response should be considered deprecated, and projects should shift to using the simple API (which can be accessed as JSON via PEP 691) to get this information where possible.

In the future, the releases key may be removed from this response.

see PyPiRepository.find_packages() for where poetry currently uses this.