use octokit throttling plugin instead of retry plugin

[harjotgill]

Summary by OpenAI

Release Notes

• Refactor: Replaces the retry plugin with the throttling plugin to improve performance and reliability of GitHub API requests. Simplifies logic for posting review comments, adds support for start_line, and improves error handling and modularity.

"Retry no more, throttling galore! Code simplified, errors no more.
Performance improved, modularity soared. Celebrate this PR, we've scored!"

[github-actions]

🤖 OpenAI

High-level Summary

The changes in this pull request replace the retry plugin with the throttling plugin from @octokit/plugin-throttling to improve the performance and reliability of the GitHub API requests. The code also simplifies the logic for posting review comments, adds support for start_line, and improves error handling and modularity. Additionally, the code retrieves the token from the environment instead of using a hardcoded value.

Files Summary

File	Summary
package.json	Replaces the "@octokit/plugin-retry" dependency with "@octokit/plugin-throttling" in the "package.json" file.
src/commenter.ts	Replaces the retry plugin with the throttling plugin in the octokit instance and simplifies the logic for posting review comments by removing batching and adding support for start_line.
src/octokit.ts	Imports the throttling plugin from @octokit/plugin-throttling and uses it to create a new Octokit instance with token authentication. The retry plugin is no longer used.
src/review-comment.ts	Removes the import of the retry plugin and replaces the octokit instance creation with an import from a separate file. The handleReviewComment function handles pull request review comments, checks if the comment was created and not edited or deleted, and replies to the comment with a summary of the PR.
src/review.ts	Removes the retry plugin import and replaces it with a custom octokit instance that uses the throttling plugin. It also removes the token variable and instead retrieves the token from the environment.

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Files ignored due to filter (1)

Ignored files

• dist/index.js

Files not summarized due to errors (1)

Failed to summarize

• package-lock.json (diff tokens exceeds limit)