Prefer partial since it is the what the [docs
suggests](https://docs.djangoproject.com/en/4.2/topics/db/transactions/#performing-actions-after-commit).
Also because partial is evaluated immediately while lambda is evaluated
at runtime (which may be causing some issues):
```
>>> from functools import partial
>>> def foo(a, b, c):
... print(a, b, c)
...
>>> x = 10
>>> bar_partial = partial(foo, 1, 2, x)
>>> bar_lambda = lambda: foo(1, 2, x)
>>> x = 20
>>> bar_partial()
1 2 10
>>> bar_lambda()
1 2 20
```
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