First pass of unit test fixes

arkindex/dataimport/tests/test_process_elements.py

arkindex/documents/tests/commands/test_reindex.py

arkindex/documents/tests/tasks/test_corpus_delete.py

arkindex/documents/tests/tasks/test_reindex.py

arkindex/documents/tests/test_bulk_classification.py

arkindex/documents/tests/test_bulk_element_transcriptions.py

arkindex/documents/tests/test_classes.py

arkindex/documents/tests/test_entities.py

arkindex/documents/tests/test_entities_api.py

arkindex/documents/tests/test_indexer.py

arkindex/documents/tests/test_manifest.py

arkindex/documents/tests/test_metadata.py

arkindex/documents/tests/test_moderation.py

arkindex/documents/tests/test_parents_elements.py

arkindex/documents/tests/test_patch_elements.py

arkindex/documents/tests/test_retrieve_elements.py

arkindex/documents/tests/test_search.py

arkindex/documents/tests/test_transcriptions.py

arkindex/project/openapi/patch.yml

arkindex/project/tests/test_elastic.py