Gripe: get rid of `pytest_plugins` usages

shared/messaging/test/test_get_archive_ingestion_message.py

shared/messaging/test/test_router.py

shared/workspaces/test/test_capability_actions.py

shared/workspaces/test/test_capability_info.py

shared/workspaces/test/test_capability_queue.py

shared/workspaces/test/test_capability_request.py

shared/workspaces/test/test_capability_service.py

shared/workspaces/test/test_execution_manager.py

shared/workspaces/test/test_workflow_service.py