Use [`get_session`] to get a configured Session. Since `requests.Session` is not guaranteed to be thread-safe,
`huggingface_hub` creates 1 Session instance per thread. They are all instantiated using the same `backend_factory`
set in [`configure_http_backend`]. A LRU cache is used to cache the created sessions (and connections) between
calls. Max size is 128 to avoid memory leaks if thousands of threads are spawned.