[FIX] Invalid domain part allowed in email during request for forgot-password

[johnson-oragui]

Describe the bug
During when a request is been made for password reset, invalid email is allowed(the domain part). extra characters are allowed in the domain part of the email, while the local part is properly validated.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'https://staging.api-python.boilerplate.hng.tech/api/v1/auth/forgot-password'
2. Enter into the email field '[email protected]'
3. Click on execute
4. See error (Invalid email is allowed)

Expected behavior
The server should return an error message invalidating the wrong email format entered by the user.

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

Desktop (please complete the following information):

• Browser brave
• Version 22

INVALID EMAIL ENTERED

INVALID EMAIL ALLOWED

Additional context
The forgot-password endpoint should be able to validate the email it receives, and should be independent of any other endpoint for validation.