Ignore deprecation warning from third party package

django-environ is throwing a deprecation warning; we can't do anything
about this, so ignore it. Unfortunately we have to pin to a older
version of django-environ because if an issue with reading secret
keys with a hash in them, so hopefully they will fix it before we
need to switch to python 3.14.

pytest.ini

@@ -4,3 +4,4 @@ python_files = tests.py test_*.py
 filterwarnings =
     # Convert all warnings to errors.
     error
+    ignore:'pkgutil.find_loader' is deprecated and slated for removal in Python 3.14:DeprecationWarning