Update example to use Claude sonnet 3.5

[huythngo]

Description

Fixes #b/346581004

Note: Before submitting a pull request, please open an issue for discussion if you are not associated with Google.

Checklist

• [x] I have followed Sample Guidelines from AUTHORING_GUIDE.MD
• [x] README is updated to include all relevant information
• [x] Tests pass: nox -s py-3.9 (see Test Environment Setup)
• [x] Lint pass: nox -s lint (see Test Environment Setup)
• [x] These samples need a new API enabled in testing projects to pass (let us know which ones)
• [x] These samples need a new/updated env vars in testing projects set to pass (let us know which ones)
• [x] This sample adds a new sample directory, and I updated the CODEOWNERS file with the codeowners for this sample
• [x] This sample adds a new Product API, and I updated the Blunderbuss issue/PR auto-assigner with the codeowners for this sample
• [x] Please merge this PR for me once it is approved

[snippet-bot[bot]]

Here is the summary of changes.

You are about to add 1 region tag.

- [generative_ai/anthropic_claude_3_tool_use.py:15](https://github.com/huythngo/python-docs-samples/blob/a737c1fbfe393ec0939d9266ab2c16736cc14641/generative_ai/anthropic_claude_3_tool_use.py#L15), tag `aiplatform_claude_3_tool_use`

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