Python 3.12 & Django 4.2 upgrade

[SunnyR]

This merge request aims to update the Python package to ensure seamless compatibility with Django 4.2 and Python 3.12. The following modifications have been implemented:

Django 4.2 Compatibility Updates:

• Updated references for ugettext_lazy to gettext_lazy.
• Upgraded package dependencies to versions compatible with Django 4.2.
• Reviewed and adjusted any deprecated Django features, replacing them with their updated counterparts.
• Ensured that existing functionality aligns with the latest Django ORM methods and query syntax.

Python 3.12 Compatibility Updates:

• Analyzed codebase for any potential issues related to Python 3.12.
• Updated syntax and libraries to ensure compatibility with Python 3.12 features and standards.
• Performed necessary adjustments to resolve any warnings or deprecation issues raised by Python 3.12.

Ref: https://sdelements.atlassian.net/browse/DEVOP-6777

[Gee19]

Left a few comments but all minor stuff, +1

[RouganStriker]

If we do drop the deprecated middlewares, we will actually need to reach out to the content team to update some things - turns out we have been advertising the django-security package in our how-tos - they should be updated to reference the Django built-in security middlewares now: I690