Support Django 5 GeneratedField

**Note: for support questions, please use stackoverflow**. This repository's issues are reserved for feature requests and bug reports.

* **What is the current behavior?**

I used Django 5's GenerativeField to define one of my fields

```
quantity = models.PositiveIntegerField()

unit_price = models.DecimalField(
max_digits=12,
decimal_places=2,
null=True,
blank=True,
)

total_price = models.GeneratedField(
expression=models.F("quantity") * models.F("unit_price"),
output_field=models.DecimalField(
max_digits=12,
decimal_places=2,
),
db_persist=True,
null=True,
blank=True,
)
```

When I try to pass the value through the` DjangoObjectType`, I received the following error:

Exception: Don't know how to convert the Django field ModelName.total_price ()

* **If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem** via
a github repo, https://repl.it or similar (you can use this template as a starting point: https://repl.it/@jkimbo/Graphene-Django-Example).

1. Create a model with a `GeneratedField`
2. Create a `DjangoObjectType` for the model created in step 1
3. Error will appear when trying to query the generated field in GraphQL

* **What is the expected behavior?**
The expected behavior is for `DjangoObjectType` to use the `output_field` type defined in the GeneratedField.

* **What is the motivation / use case for changing the behavior?**
We would like to leverage the new `GeneratedField` functionality in Django 5.

* **Please tell us about your environment:**

- Version: 14,2,1
- Platform: macOS Sonoma
- Django_version = 5.0.1
-Graphene_version = 3.3

* **Other information** (e.g. detailed explanation, stacktraces, related issues, suggestions how to fix, links for us to have context, eg. stackoverflow)