Excluded the line from code coverage because I was unable to find a way to...

Excluded the line from code coverage because I was unable to find a way to trigger this error. This may very well be dead code but I was unable to find any documentation from pydantic about in which cases data is not a dict. They use the Any annotation in all examples so it may not be a dict for some reason. The only way I can think of would be for another model_validator changing the type of data which is not the case here.

src/Notebook_Processor/configuration/models/configuration_model.py

@@ -30,7 +30,7 @@ class ConfigurationModel(ConfiguredBaseModel):
         Since this only happens during the startup of the application, I consider this to be a positive side effect that protects against errors.
         """
         if not isinstance(data, dict):
-            raise TypeError(f"data must be a dict, not {type(data)}")
+            raise TypeError(f"data must be a dict, not {type(data)}")  # pragma: no cover  # I don't know of any way to trigger this error but I feel better having it here just in case.
 
         for field, info in cls.model_fields.items():
             data.setdefault(field, environ.get(field, info.default))