fix: rename blacklist to blocklist for email domain validation

[mirkan1]

What type of PR is this?

I saw this error on vs-studio, it was weird that it didnt throw an error..
After testing manualy I figured that both blacklist and blocklist exists in the third party repo but it is not visible in the configs so was cousing troubles for vs code, this change fixed the issue

• Refactor
• Bug Fix

Description

No name 'blacklist' in module 'disposable_email_domains'Pylint[E0611:no-name-in-module]

How is this tested?

• Manually

Related Tickets & Documents

https://pylint.readthedocs.io/en/latest/user_guide/messages/error/no-name-in-module.html

[github-actions]

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