Bootstrap Integration - Platforms won't import if no manufacturer assigned

[bile0026]

Environment

• Python version: 3.11.4
• Nautobot version: 2.3.12
• nautobot-ssot version: 3.2.0

Expected Behavior

Platforms create when running the bootstrap integration

Observed Behavior

Key error occurs on loading data from Nautobot if there is no Manufacturer associated with a platform.

{
    "exc_message": [
        "'NoneType' object has no attribute 'name'"
    ],
    "exc_module": "builtins",
    "exc_type": "AttributeError"
}

Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/nautobot_ssot/integrations/bootstrap/diffsync/adapters/nautobot.py", line 342, in load_platform
    self.get(self.platform, nb_platform.name)
  File "/usr/local/lib/python3.11/site-packages/diffsync/__init__.py", line 724, in get
    return self.store.get(model=obj, identifier=identifier)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/diffsync/store/local.py", line 49, in get
    raise ObjectNotFound(f"{modelname} {uid} not present in {str(self)}")
diffsync.exceptions.ObjectNotFound: platform linux not present in LocalStore

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/celery/app/trace.py", line 477, in trace_task
    R = retval = fun(*args, **kwargs)
                 ^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/celery/app/trace.py", line 760, in __protected_call__
    return self.run(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/nautobot/extras/jobs.py", line 1136, in run_job
    result = job(*args, **kwargs)
             ^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/nautobot/extras/jobs.py", line 149, in __call__
    return self.run(*args, **deserialized_kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/nautobot_ssot/integrations/bootstrap/jobs.py", line 105, in run
    super().run(dryrun=self.dryrun, memory_profiling=self.memory_profiling, *args, **kwargs)
  File "/usr/local/lib/python3.11/site-packages/nautobot_ssot/jobs/base.py", line 354, in run
    self.sync_data(memory_profiling)
  File "/usr/local/lib/python3.11/site-packages/nautobot_ssot/jobs/base.py", line 171, in sync_data
    self.load_target_adapter()
  File "/usr/local/lib/python3.11/site-packages/nautobot_ssot/integrations/bootstrap/jobs.py", line 97, in load_target_adapter
    self.target_adapter.load()
  File "/usr/local/lib/python3.11/site-packages/nautobot_ssot/integrations/bootstrap/diffsync/adapters/nautobot.py", line 1309, in load
    self.load_platform()
  File "/usr/local/lib/python3.11/site-packages/nautobot_ssot/integrations/bootstrap/diffsync/adapters/nautobot.py", line 357, in load_platform
    manufacturer=nb_platform.manufacturer.name,
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'name'

Steps to Reproduce

1. Create a platform in Nautobot with no assigned Manufacturer attribute
2. Run the Bootstrap Integration to sync platforms