Fix dynamic rulebook example

[dfremont]

No description provided.

[kevinchang73]

Hi @dfremont, I ran into the following error while executing run_multi_dynamic.sh:

AttributeError: 'LateFeatureSampler' object has no attribute 'nextSample'. Did you mean: 'getSample'?

It looks like there's an API mismatch between VerifAI and Scenic. Specifically, verifai.samplers.feature_sampler.LateFeatureSampler uses getSample(), but scenic.core.external_params.VerifaiSampler is calling nextSample().

[dfremont]

Hi Kai-Chun, that error indicates that you're using an old version of Scenic. Can you please try installing the latest version (3.1.1) and see if that fixes the problem? If so, I'll update pyproject.toml to require that version (I think I'd held off before because I hadn't yet made a new Scenic release).