Added capability to customize read and connection timeout for bedrock models

[akshay20t]

Why are these changes needed?

With existing AutoGen implementation of Bedrock client class BedrockClient, the Amazon Bedrock inference request gets timed out when the input token size is large (>~10,000 tokens). This happens because the current implementation uses default read and connection timeout values (60 seconds) from boto3 while initializing the Config class. Due to this default value the create method in BedrockClient class raises RuntimeError even though bedrock model is still generating response (as monitored in AWS CloudWatch).

With increasing context window size of LLM in today's Generative AI era, it is important to introduce capability for user-defined read timeouts to support large input tokens for agents.

Related issue number

Closes #5505

Checks

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[ekzhu]

To quick fix the formatting error. Run pre-commit --all-files

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 29.50%. Comparing base (ad3bed3) to head (09486a3).

Files with missing lines	Patch %	Lines
autogen/oai/bedrock.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              0.2    #5529      +/-   ##
==========================================
+ Coverage   29.26%   29.50%   +0.23%     
==========================================
  Files         117      117              
  Lines       13038    13040       +2     
  Branches     2473     2473              
==========================================
+ Hits         3816     3847      +31     
+ Misses       8876     8846      -30     
- Partials      346      347       +1     

Flag	Coverage Δ
unittests	29.50% <0.00%> (+0.23%)	⬆️

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[akshay20t]

To quick fix the formatting error. Run pre-commit --all-files

Thanks @ekzhu! Done with reformatting as per pre-commit configuration of the project.

[ekzhu]

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