Import of objectpermissions that have constraints consisting of a list of ORed conditions fails

[jcsicard]

Environment

• Python version: 3.9
• Nautobot version: 1.2.2
• nautobot-netbox-importer version: 1.4.0

Expected Behavior

Import of objectpermissions that have constraints consisting of a list of conditions such as
[{"name": "foo"}, {"name": "bar"}]
should work.

Observed Behavior

objectpermission : 0%| | 0/ 323 [00:00]17:15:54 error Invalid data according to internal data model
12:15:54§ comment: This may be an issue with your source data or may reflect a bug in this plugin.
12:15:54§ action: load
12:15:54§ exception: 1 validation error for ObjectPermission
12:15:54§ constraints
12:15:54§ value is not a valid dict (type=type_error.dict)
12:15:54§ model: objectpermission
12:15:54§ model_data:
12:15:54§ {'actions': '["view"]',
12:15:54§ 'constraints': [{'name': 'foo'}, {'name': 'bar'}],
12:15:54§ 'description': '',
12:15:54§ 'enabled': True,
12:15:54§ 'groups': [{'name': 'foobargrp'}],
12:15:54§ 'name': 'foobarperm',
12:15:54§ 'object_types': [{'app_label': 'tenancy', 'model': 'tenantgroup'},
12:15:54§ {'app_label': 'tenancy', 'model': 'tenant'}],
12:15:54§ 'pk': 308,
12:15:54§ 'users': [UUID('036b093d-d350-538e-bad9-1fd132b1f5fa')]}

The model validation is overly restrictive in allowing only dict type while lists should also be allowed:
https://github.com/nautobot/nautobot-plugin-netbox-importer/blob/a225bc38b9ef51ff8d6f1fdc72dd5472eedf0b30/nautobot_netbox_importer/diffsync/models/users.py#L27

Steps to Reproduce

1. In netbox, create a permission with the following properties
   object_types: tenancy/tenant, tenancy/tenant group
   constraints: [{"name": "foo"}, {"name": "bar"}]

2. Export netbox data

3. Import to nautobot...