fix: azure

[nishihara-shinya]

Summary by CodeRabbit

• Refactor: Updated GitHub Actions workflow to trigger on pull_request instead of pull_request_target, and added a condition to skip the workflow for dependabot[bot].
• Chore: Updated environment variables for Azure OpenAI API in the GitHub Actions workflow.
• New Feature: Added "langchain" package as a new dependency in package.json.
• Refactor: Simplified the Bot class in src/bot.ts by removing the ChatGPTAPI import, updating the OpenAI API configuration, and modifying the chat and chat_ methods.
• Refactor: Removed the openai_base_url input from function calls in src/main.ts and the apiBaseUrl property from the Options class in src/options.ts.
• Style: Simplified code in src/review-comment.ts and src/review.ts by removing array destructuring and directly assigning responses from await calls to variables.

[github-actions[bot]]

CodeRabbit

Walkthrough

This pull request primarily refactors the interaction with the OpenAI API in the Bot class, updates the GitHub Actions workflow file, and removes some unnecessary code. It also adds a new package dependency. The changes aim to improve the maintainability and readability of the code.

Changes

File(s)	Summary
.github/workflows/openai-review.yml	Modifies the GitHub Actions workflow file, changing the event trigger and adding a condition to skip the workflow for dependabot[bot]. Updates environment variables related to Azure OpenAI API.
package.json	Adds "langchain" as a new package dependency.
src/bot.ts	Refactors the Bot class, replacing the api property with model and api properties. Updates the OpenAI API configuration to use Azure environment variables.
src/main.ts, src/options.ts	Removes the openai_base_url input and the apiBaseUrl property from the Options class.
src/review-comment.ts, src/review.ts	Simplifies the code by removing array destructuring and directly assigning responses from await calls to variables.

🐰💻

Code is like a garden, it needs care,

With each refactor, we show it our flair.

We prune, we trim, we add anew,

To make our codebase feel fresh and true.

So here's to changes, big and small,

May our code continue to enthrall! 🎉🥕

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