Updated TextGen module. Updated KB module

[ashchenn]

Issue #, if available: N/A Discussed with Shreyas on the proposed changes via slack. Below edits are minor and are quick fix for an upcoming workshop of mine

Description of changes:

1. In text generation module, removed Deepseek model as the converse response doesn't match the expected response syntax. Happy to take a deep dive next week
2. In KB module - Create KB and Ingest Documents, I modified the pip install command as multiple teammates ran into pip dependency issues
3. In KB module - Create KB and Ingest Documents, I modified the S3 bucket suffix randrange (100,99999) as we run out of unique suffix. In next iteration we should think of different approach (maybe using Python's uuid?) to make it more resilient.

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[w601sxs]

approving