feat!: Django 4

[faucomte97]

Upgrade from Django 3.2 to Django 4.2

• Upgraded all Django-related libraries, and reorganise where they sit, i.e., move the ones also installed by Rapid Router to the common package
• Updated our custom security middleware to continue setting the X-XSS-Protection header to 1 as Django stopped doing it
• Renamed the captcha library to django-recaptcha
• Updated all URLs to use re_path instead of url
• Extended Django's UserAdmin class to be able to still add custom Django admin panel actions to it
• Updated the two_factor templates that we overrode a while back to customise them, to match the new latest version of the library
• Updated the two_factor views that we overrode a while back to customise them, to match the new latest version of the library
• Targeted Django admin panel's logout button using the form action instead of the href of the anchor which got updated to a button by Django
• Replaced force_text with force_bytes
• Replaced ugettext with gettext

This change is