Update django-secure to 1.0.2

[pyup-bot]

This PR updates django-secure from 1.0.1 to 1.0.2.

Changelog

1.0.2

-------------------

* This project was merged into Django 1.8 and its features are now part of core
Django. Thus it is unmaintained and you should not use it.

Links

• PyPI: https://pypi.org/project/django-secure
• Changelog: https://pyup.io/changelogs/django-secure/
• Repo: https://github.com/carljm/django-secure/