Broken link in product-review-agent use case example

The [product-review-agent](https://github.com/aws-samples/amazon-bedrock-samples/tree/main/agents-and-function-calling/bedrock-agents/use-case-examples/product-review-agent) example references a link:
`https://jmcauley.ucsd.edu/data/amazon_v2/categoryFilesSmall/All_Beauty_5.json.gz` that no longer works.

The updated link is:
`https://mcauleylab.ucsd.edu/public_datasets/data/amazon_v2/categoryFilesSmall/All_Beauty_5.json.gz`

I found this out by navigating to Professor Julian McAuley's website (https://cseweb.ucsd.edu/~jmcauley/) and following his link to [datasets](https://cseweb.ucsd.edu/~jmcauley/datasets.html).

Search the repository for the old All_Beauty_5.json.gz URL, starting with the agents-and-function-calling/bedrock-agents/use-case-examples/product-review-agent example. Update the reference to the provided mcauleylab.ucsd.edu URL, then verify the old URL is no longer present and the example points to the working dataset.

Written by the indexing model from the issue text.