text: Title: Silence the `filelock` logger
  Body: After we started using `tldextract` we sometimes get log messages from `filelock` with the DEBUG level, it makes sense to silence them like we do for some other libraries in https://github.com/scrapy/scrapy/blob/fe60c1224e39aa3d85b20afd54566f135d9de085/scrapy/utils/log.py#L45-L59