Sync QuestionAnsweringPipeline (#34039)

* Sync QuestionAnsweringPipeline

* typo fixes

* Update deprecation warnings

tests/pipelines/test_pipelines_question_answering.py

@@ -14,6 +14,8 @@
 
 import unittest
 
+from huggingface_hub import QuestionAnsweringOutputElement
+
 from transformers import (
     MODEL_FOR_QUESTION_ANSWERING_MAPPING,
     TF_MODEL_FOR_QUESTION_ANSWERING_MAPPING,
@@ -23,6 +25,7 @@ from transformers import (
 from transformers.data.processors.squad import SquadExample
 from transformers.pipelines import QuestionAnsweringArgumentHandler, pipeline
 from transformers.testing_utils import (
+    compare_pipeline_output_to_hub_spec,
     is_pipeline_test,
     nested_simplify,
     require_tf,
@@ -132,6 +135,8 @@ class QAPipelineTests(unittest.TestCase):
         self.assertEqual(
             outputs, [{"answer": ANY(str), "start": ANY(int), "end": ANY(int), "score": ANY(float)} for i in range(20)]
         )
+        for single_output in outputs:
+            compare_pipeline_output_to_hub_spec(single_output, QuestionAnsweringOutputElement)
 
         # Very long context require multiple features
         outputs = question_answerer(