DA-626: update Azure

[teetangh]

• Added support for loading credentials from .env file
• Improved Azure OpenAI configuration with optional environment variables
• Enhanced error handling for OpenAI API calls
• Updated notebook to use python-dotenv for credential management
• Increased embedding dimensions from 1536 to 3072 in index configuration
• Minor text corrections in markdown cells

[github-actions]

Caution

Notebooks or Frontmatter Files Have Been Modified

• Please ensure that a frontmatter.md file is accompanying the notebook file, and that the frontmatter is up to date.
• These changes will be published to the developer portal tutorials only if frontmatter.md is included.
• Proofread all changes before merging, as changes to notebook and frontmatter content will update the developer tutorial.

1 Notebook Files Modified:

Notebook File	Frontmatter Included?
azure/RAG_with_Couchbase_and_AzureOpenAI.ipynb	✅

0 Frontmatter Files Modified:

Frontmatter File
Note: frontmatter will be checked and tested in the Test Frontmatter workflow.

[nithishr]

@teetangh Same comments as AWS Bedrock(#24 (comment)). Addtionally,

• The text mentions to use the batch size of 10 but the code is using a batch size of 100
• The initial RAG response is not matching the query if you follow the notebook serially.

[teetangh]

@deniswsrosa Need more quota to rerun the tutorial

[AayushTyagi1]

Please merge main before merging this work.