There are a few options how to change app config for tests. According to FastAPI docs, it's recommended to use `dependency_overrides`, but there might be a case where we need to change the entire app settings (using Pydantic's BaseSettings here).
There are a few options how to change app config for tests. According to FastAPI docs, it's recommended to use `dependency_overrides`, but there might be a case where we need to change the entire app settings (using Pydantic's BaseSettings here).