Update `google-generativeai` to `google-genai` in `New_in_002.ipynb`

[iambogeumkim]

@Giom-V

You mentioned in #446: 'No need to migrate, I'll merge it into an "advanced parameter notebook" (or make this one instead ;))', but I couldn't find the advanced parameter notebook yet, so I started working on this file instead.

It's about halfway done, but I opened this PR to check whether I should continue or stop here.

I'd appreciate your thoughts!

[review-notebook-app[bot]]

Check out this pull request on 

See visual diffs & provide feedback on Jupyter Notebooks.

---

Powered by ReviewNB

[andycandy]

I think it makes more sense to create a new notebook that highlights the capabilities of the latest models, like Gemini 2.5. The current notebook was built back when Gemini 2.0 had just launched, so showcasing the improvements with a fresh example feels like a better direction.

[andycandy]

You can always refer to ./quickstarts/template.ipynb for creating new notebooks

[iambogeumkim]

@andycandy Thank you for you suggestion 😊 I should try working on it in the direction you suggested.

[Giom-V]

@nsbg Thanks a lot for the contribution!

As @andycandy said, I think it would be better to create a new notebook as I had planned. That said, it's going to be a landfield as there's a lot to explain (and a lot to come), and a need to explain it right, which means I might ask you for a lot of rework and we're going to have to go through a lot of reviews (I might even ask my TW colleagues to have a look).

So I would not forbid to work on that, on the contrary, but be warned that it's a tough one so don't start unless you are ready for it...