feat: update itens to use variable like parameters

[felipementel]

This pull request updates environment variable usage in two Jupyter notebooks to improve configurability and align with best practices. Specifically, it replaces hardcoded deployment names with environment variables.

Updates to environment variable usage:

• In 07-building-chat-applications/python/aoai-assigment-simple.ipynb, replaced the hardcoded deployment name "gpt-35-turbo" with the environment variable os.environ['AZURE_OPENAI_DEPLOYMENT'] for better flexibility.
• In 08-building-search-applications/python/aoai-assignment.ipynb, replaced the hardcoded model name 'text-embedding-ada-002' with the environment variable os.getenv("AZURE_OPENAI_EMBEDDINGS_DEPLOYMENT") to support dynamic configuration.

[github-actions]

👋 Thanks for contributing @felipementel! We will review the pull request and get back to you soon.

[Copilot]

Pull Request Overview

This pull request improves configuration management by replacing hardcoded deployment and model names with environment variables in two Jupyter notebooks. This change enhances flexibility and follows best practices for configurable deployments.

• Replaced hardcoded "gpt-35-turbo" deployment name with environment variable in chat application notebook
• Replaced hardcoded "text-embedding-ada-002" model name with environment variable in search application notebook

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
07-building-chat-applications/python/aoai-assigment-simple.ipynb	Updates deployment name to use AZURE_OPENAI_DEPLOYMENT environment variable
08-building-search-applications/python/aoai-assignment.ipynb	Updates model name to use AZURE_OPENAI_EMBEDDINGS_DEPLOYMENT environment variable

Comments suppressed due to low confidence (1)

08-building-search-applications/python/aoai-assignment.ipynb:1

• If the environment variable AZURE_OPENAI_EMBEDDINGS_DEPLOYMENT is not set, os.getenv() will return None, which will cause the subsequent client.embeddings.create() call to fail. Consider providing a default value or adding validation to ensure the model is not None.

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[Copilot]

Using os.environ['AZURE_OPENAI_DEPLOYMENT'] will raise a KeyError if the environment variable is not set. Consider using os.getenv('AZURE_OPENAI_DEPLOYMENT') with a default value or proper error handling to provide a better user experience.

Suggested change

	"deployment = os.environ['AZURE_OPENAI_DEPLOYMENT']"
	"deployment = os.getenv('AZURE_OPENAI_DEPLOYMENT', '').strip()\n",
	"assert deployment, \"ERROR: Azure OpenAI Deployment name is missing\""