cleanup email after moving to django-post-office

[escattone]

No description provided.

[Copilot]

PR Overview

This PR cleans up the email configuration by removing legacy bandit integration and related configurations now that the project has switched to using django-post-office. Key changes include:

• Removing "bandit" from INSTALLED_APPS and associated email backend configuration.
• Updating the documentation and dependency configuration to reference post_office instead of bandit.
• Removing the LoggingEmailBackend and its tests, along with the rate limiting functionality.

Reviewed Changes

File	Description
kitsune/settings.py	Removed bandit entries from installed apps and email settings.
docs/email.md	Updated email backend configuration documentation for post_office.
pyproject.toml	Removed the django-email-bandit dependency.
kitsune/lib/email.py	Deleted LoggingEmailBackend and removed rate limiting code.
kitsune/lib/tests/test_email.py	Removed tests for the legacy LoggingEmailBackend.

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Comments suppressed due to low confidence (2)

kitsune/lib/tests/test_email.py:1

• The removal of tests for the legacy LoggingEmailBackend reduces coverage for email functionality. Please add tests to cover the new email backend behavior under django-post-office.

Entire file deleted

kitsune/lib/email.py:16

• [nitpick] Ensure that the removal of the rate limiting functionality in SMTPEmailBackendWithSentryCapture is fully intentional and that no critical rate limiting behavior is required for production.

self.rate_limit = RateLimit(key="rate-limit-emails", rate="100/sec", wait_period=1, max_wait_period=30)