chore: Use token instead of use_auth_token because of deprecation warning (#8552)

* Use token instead of use_auth_token because of deprecation warning

* Fix test

* pylint

* fix linting

---------

Co-authored-by: Stefano Fiorucci <[email protected]>

Author: sjrl

haystack/components/embedders/backends/sentence_transformers_backend.py

@@ -19,7 +19,7 @@ class _SentenceTransformersEmbeddingBackendFactory:
     _instances: Dict[str, "_SentenceTransformersEmbeddingBackend"] = {}
 
     @staticmethod
-    def get_embedding_backend(
+    def get_embedding_backend(  # pylint: disable=too-many-positional-arguments
         model: str,
         device: Optional[str] = None,
         auth_token: Optional[Secret] = None,
@@ -52,7 +52,7 @@ class _SentenceTransformersEmbeddingBackend:
     Class to manage Sentence Transformers embeddings.
     """
 
-    def __init__(
+    def __init__(  # pylint: disable=too-many-positional-arguments
         self,
         model: str,
         device: Optional[str] = None,
@@ -67,7 +67,7 @@ def __init__(
         self.model = SentenceTransformer(
             model_name_or_path=model,
             device=device,
-            use_auth_token=auth_token.resolve_value() if auth_token else None,
+            token=auth_token.resolve_value() if auth_token else None,
             trust_remote_code=trust_remote_code,
             truncate_dim=truncate_dim,
             model_kwargs=model_kwargs,

test/components/embedders/test_sentence_transformers_embedding_backend.py

@@ -37,7 +37,7 @@ def test_model_initialization(mock_sentence_transformer):
     mock_sentence_transformer.assert_called_once_with(
         model_name_or_path="model",
         device="cpu",
-        use_auth_token="fake-api-token",
+        token="fake-api-token",
         trust_remote_code=True,
         truncate_dim=256,
         model_kwargs=None,