* #4653 fix changing scores by returning new document objects from document store queries
* added integration test for InMemoryDocumentStore demonstrating the desired behavior
* Update test/document_stores/test_memory.py
* move tests to their own class
* move more tests
* add specific job
* fix test
* Update test/document_stores/test_memory.py
Co-authored-by: Sara Zan <sara.zanzottera@deepset.ai>
Co-authored-by: Sara Zan <sara.zanzottera@deepset.ai>