chore: update .fernignore

Author: fern-support

.fernignore

@@ -5,7 +5,8 @@ src/vapi/assistants/types/update_assistant_dto_server_messages_item.py
 src/vapi/types/assistant_overrides_server_messages_item.py
 src/vapi/types/assistant_server_messages_item.py
 src/vapi/types/create_assistant_dto_server_messages_item.py
+src/vapi/core/__init__.py
 
 # Reduce size of the imports
 src/vapi/__init__.py
-src/vapi/types/__init__.py
+src/vapi/types/__init__.py