Fix Bedrock Boto3 Client Timeout

[ronaldpereira]

Fix bedrock boto3 read_timeout error when setting LLMConfig timeout higher than 60 seconds.

Why are these changes needed?

When calling bedrock models, botocore gives a read_timeout exception almost every time when the model call takes longer than 60 seconds. For faster models this is ok, but for newer and heavier models (e.g., claude-3.7), it isn't enough. So we already have a timeout llm_config attribute that we can set directly into the boto3 config instance.

Related issue number

No issue related.

Checks

• I've included any doc changes needed for https://docs.ag2.ai/. See https://docs.ag2.ai/docs/contributor-guide/documentation to build and test documentation locally.
• I've added tests (if relevant) corresponding to the changes introduced in this PR.
• I've made sure all auto checks have passed.

[CLAassistant]

All committers have signed the CLA.

[ronaldpereira]

@davorrunje my git user.email was wrong. I've forced push the same commits with my updated email now. The CLA action detected correctly that I've signed it as well.

[marklysze]

Thanks @ronaldpereira!

[codecov]

Codecov Report

Attention: Patch coverage is 25.00000% with 3 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
autogen/oai/bedrock.py	25.00%	3 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (fe622b4) and HEAD (f5115ab). Click for more details.

HEAD has 2532 uploads less than BASE

Flag	BASE (fe622b4)	HEAD (f5115ab)
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Files with missing lines	Coverage Δ
autogen/oai/bedrock.py	23.43% <25.00%> (-20.62%)	⬇️

... and 69 files with indirect coverage changes

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