[tompollard]

Upgrades django-debug-toolbar from 5.2 to 8.0. Versions before 6.2 don't support Django 6; 8.0 supports Django 5.2, 6.0 and 6.1, and needs Python 3.10+.

It's in the dev dependency group and is only enabled when DEBUG is on. Note that deploy/update runs uv sync --locked without --no-dev, so the servers do install it.

The changes in 6.0 to 8.0 don't affect our setup (SHOW_TOOLBAR_CALLBACK, INTERNAL_IPS, include(debug_toolbar.urls)). The main visible change is that the toolbar now renders in a shadow DOM with a refreshed design. 7.1 also adds a Tasks panel for Django's built-in tasks, which will be useful later.

No code changes were needed.

Testing

• Upgrade test passes (old server with new libraries, and new server).
• manage.py check and makemigrations --check pass.
• On the dev server, the toolbar renders alongside a styled page, the SQL panel opens and lists the page's queries, and there are no console errors.