Migrate generativeai lib to genai lib

[Jainish-S]

🚀 The feature

Googles https://pypi.org/project/google-generativeai/ is deprecated and has no new features.

Motivation, pitch

The deprecated lib is causing conflicts with newer packages related to communication libs like protobuff.

I would suggest to upgrade them all with this newer lib https://pypi.org/project/google-genai/.

Would like to get know if I'm missing any context here.