[FIX] Invalid domain part allowed in email during request for magic-link

[johnson-oragui]

Describe the bug
During a request for login via the use of magic-link, invalid emails(incorrect domain part) is allowed, example [email protected].

To Reproduce
Steps to reproduce the behavior:

1. Go to 'https://staging.api-python.boilerplate.hng.tech/api/v1/auth/magic-link'
2. Enter 'enter [email protected]'
3. Click on 'execute'
4. See error (Email sent to the invalid email)

Expected behavior
A field validation error should be returned with some message with details of the wrong email format.

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• Browser brave
• Version 22

ENTER INVALID EMAIL

INVALID EMAIL ACCEPTED

Additional context