Django 5 upgrade

[awdem]

Upgrade to django 5.2.7. Also bumps the following packages:

package	bump	changelog
django-extensions	3.2.3 > 4.1.0	Here
django-filter	25.1 > 25.2	Here
djangorestframework	3.15.2 > 3.16.1	Here
django-debug-toolbar	5.0.1 > 6.0.0	Here
pytest-django	4.10.0 > 4.11.1	Here
django-braces	1.16.0 > 1.17.0	Here
django-formtools	2.2 > 2.5.1	Here
django-storages	1.14.5 >1.14.6	Here
django-pipeline	4.0.0 > 4.1.0	Here
django-localflavor	4.0 > 5.0	Here

Notes:

• django-braces latest release doesn't officially support django >4.2. It looks like there is a "spiritual successor" called django-brackets that is for django >4.2 and does the same things. However, for the stuff we're using from django-braces (LoginRequiredMixin, StaffuserRequiredMixin) doesn't seem broken , so not sure if it's worth switching from braces to brackets?
• The django-formtools bump that caused issues outlined in upgrade django-formtools==2.5.1 (attempt 2) EveryElection#2537 doesn't seem to break anything on this repo. I'm not sure why and worried I'm missing something so it would be good to double check this assumption.
• django-s3file has a 6.0.0 release on github that supports django 5.1, but its not on PyPi for some reason.
• django-debug-toolbar wasn't actually set up properly so I did that.

Deprecations:

• I've bumped dc-django-utils and replaced STATICFILES_STORAGE with the STORAGES dict. We weren't importing the default pipeline settings from dc_utils in this repo so I also implemented that.
• I've bumped dc-design-system to the latest version but didn't need to update anything.
• I've removed the USE_L10N setting which was deprecated in 4.0 and removed in 5.0. Its default behavior now.
• I've remove django-querystring-tag because its part of core django now.

---

• To see the specific tasks where the Asana app for GitHub is being used, see below:
  • https://app.asana.com/0/0/1211454481125635

[awdem]

Per discussion on slack, I've removed django-braces and tested that the updated django-formtools doesn't increase the amount of database queries when using the form. It doesn't.

This PR has also been deployed to https://stage.electionleaflets.org/

[chris48s]

Question: Do we need to deepcopy() here?

[awdem]

Yeah we do. Done in bc08192

[chris48s]

Its annoying that django-s3file isn't on PyPI but having looked over codingjoe/django-s3file@5.5.7...6.0.0 I don't think there is anything we need in it for django 5.2 compatibility so I reckon lets just stick on 5.5.7 rather than switch to a VCS dependency. I raised an issue upstream about it anyway.

[chris48s]

will leave it with you to:

• squash fixups
• revert 3e490fb

and merge