Update django-upgrade to 1.19.0

[pyup-bot]

This PR updates django-upgrade from 1.18.0 to 1.19.0.

Changelog

1.19.0

-------------------

* Add Django 4.2+ fixer to rewrite ``index_together`` declarations into ``indexes`` declarations in model ``Meta`` classes.
This fixer can make changes that require migrations.
Add a `test for pending migrations <https://adamj.eu/tech/2024/06/23/django-test-pending-migrations/>`__ to ensure that you do not miss these.

`PR 464 <https://github.com/adamchainz/django-upgrade/pull/464>`__.

* Fix tracking of AST node parents.
This may have fixed some subtle bugs in these fixers:

* ``admin_register``
* ``assert_form_error``
* ``default_app_config``
* ``management_commands``
* ``request_headers``
* ``settings_database_postgresql``
* ``settings_storages``
* ``testcase_databases``
* ``use_l10n``
* ``utils_timezone``

If you see any new changes, or had them previously disabled, please report an issue so we can extra tests to the test suite.

`PR 465 <https://github.com/adamchainz/django-upgrade/pull/465>`__.

Links

• PyPI: https://pypi.org/project/django-upgrade
• Changelog: https://data.safetycli.com/changelogs/django-upgrade/