make the assert work with numpy integers

[rlucas7]

• currently when I try to run the example demo-ing prompt optimizer I get a failure that np.int64 is not an accepted input type for Value. This pr changes the assertion to accept that input type for ints. After making the change locally I am able to run the quick start code successfully.

[rlucas7]

So I hadn't seen the multimodal workflows as a use case.

I found the test harness command from some of the other PRs w/a green check.
I ran the tests on this branch:

and the multimodal test at that line fails whereas it passes on the current time of main bf5b0c5 so I'm not sure what is the best way to proceed here. If the intent is to not have numpy ints as inputs then we can close this, but if there is something that needs to be changed for the multimodal stuff please LMK. In my current project I'm working with text only (natural language and programming languages).

To be clear, to execute tests locally I'm running:

pytest --ignore=tests/test_api.py --ignore=tests/test_litellm_engine_functional.py --ignore=tests/test_litellm_engine_parameters_and_caching.py