Switch off dynaboxify

This will revent dynaconf from creating their own versions of dicts and lists.

The python saml2 library does not approve of it.

Author: mdellweg

pulpcore/app/settings.py

@@ -644,6 +644,7 @@ def saml2_settings_hook(settings):
         distributed_publication_retention_period_validator,
     ],
     post_hooks=(otel_middleware_hook, saml2_settings_hook),
+    dynaboxify=False,
 )
 
 _logger = getLogger(__name__)