Resolve django 5 deprecations

[jelly]

../../../../../opt/hostedtoolcache/Python/3.9.9/x64/lib/python3.9/site-packages/django/conf/__init__.py:222
  /opt/hostedtoolcache/Python/3.9.9/x64/lib/python3.9/site-packages/django/conf/__init__.py:222: RemovedInDjango50Warning: The USE_L10N setting is deprecated. Starting with Django 5.0, localized formatting of data will always be enabled. For example Django will display numbers and dates using the format of the current locale.
    warnings.warn(USE_L10N_DEPRECATED_MSG, RemovedInDjango50Warning)

mirrors/tests/test_mirrorlist.py::MirrorListTest::test_mirrorlist
  /home/runner/work/archweb/archweb/mirrors/views/mirrorlist.py:45: RemovedInDjango50Warning: django.forms.BaseForm._html_output() is deprecated. Please use .render() and .get_context() instead.
    return self._html_output(

packages/tests/test_views.py::test_sitemap
  /opt/hostedtoolcache/Python/3.9.9/x64/lib/python3.9/site-packages/django/contrib/sitemaps/__init__.py:117: UnorderedObjectListWarning: Pagination may yield inconsistent results with an unordered object_list: <class 'main.models.Package'> QuerySet.
    return paginator.Paginator(self._items(), self.limit)

[f09f909b]

I can take a try at this.

[jelly]

Sure go ahead!