Change default email port to 587

[AetherUnbound]

Description

In some recent infrastructure troubleshooting, we found that our email client was attempting to connect on the default port (25) and connection attempts were timing out. We changed this to port 587, a more secure SMTP port, and the client worked correctly. Since most mail clients use or require SSL/TLS, it seemed prudent to update this default to reflect that.

Testing Instructions

1. just dj shell
2. from django.conf import settings
3. Check that settings.EMAIL_PORT now shows 587

Checklist

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• I added or updated tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no visible errors.

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