fix: bedrock component handling AWS constants

[edwinjosechittilappilly]

This pull request introduces several changes to improve the handling of AWS constants and simplify the configuration of AWS-related components in the backend. The main updates include the addition of AWS model IDs and regions, and the refactoring of AWS-related inputs to use these constants.

AWS Constants Addition:

• Added a list of AWS model IDs and AWS regions in the aws_constants.py file.

AWS Embeddings Component:

• Imported AWS_REGIONS from aws_constants.py in amazon_bedrock.py.
• Updated the AmazonBedrockEmbeddingsComponent class to use AWS_REGIONS for the region_name dropdown options.
• Added default values for AWS credentials inputs in the AmazonBedrockEmbeddingsComponent class. [1] [2]

AWS Models Component:

• Imported AWS_REGIONS and AWS_MODEL_IDs from aws_constants.py in amazon_bedrock.py.
• Updated the AmazonBedrockComponent class to use AWS_MODEL_IDs for the model_id dropdown options.
• Updated the AmazonBedrockComponent class to use AWS_REGIONS for the region_name dropdown options.
• Added default values for AWS credentials inputs in the AmazonBedrockComponent class. [1] [2]

[codspeed-hq]

CodSpeed Performance Report

Merging #4514 will not alter performance

_{Comparing fix-aws-bedrock-components-secrets (787b596) with main (f34d57a)}

Summary

✅ 15 untouched benchmarks

[ogabrielluiz]

LGTM