1. Stop using 'required' and use 'auto' for tool_choice parameter to avoid an infinite loop and 2. improve log readability by colorizing and do some minor refactorings

[hiroshinishio]

Summary by Sourcery

Enhancements:

• Improve log readability by colorizing log messages in the commit_changes and check_run_handler modules.

[sentry-io]

🔍 Existing Issues For Review

Your pull request is modifying functions with the following pre-existing issues:

📄 File: services/check_run_handler.py

Function	Unhandled Issue
handle_check_run	IndexError: list index out of range /webhook Event Count: 79
handle_check_run	KeyError: 'pull_requests' /webhook Event Count: 2
handle_check_run	KeyError: 'owner' /webhook Event Count: 2
handle_check_run	KeyError: 'update_github_comment' /webhook Event Count: 1

📄 File: services/openai/commit_changes.py (Click to Expand)

Function	Unhandled Issue
chat_with_agent	KeyError: 'update_github_comment' /webhook Event Count: 1

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[sourcery-ai]

Hey @hiroshinishio - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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