Log Message:
py-email_validator: updated to 2.1.1

2.1.1

Fixed typo 'marking' instead of 'marketing' in case-insensitive mailbox name list.
When DNS-based deliverability checks fail, in some cases exceptions are now \ 
thrown with raise ... from for better nested exception tracking.
Fixed tests to work when no local resolver can be configured.
This project is now licensed under the Unlicense (instead of CC0).
Minor improvements to tests.
Minor improvements to code style.