Lesly update name instance

[Leslyp]

Summary by OpenAI

New Feature:

• Switched from OpenAI GPT-3.5 Turbo to RedRover GPT-4 model
• Updated API calls and error messages to use RedRover service

Refactor:

• Replaced all instances of "@openai" with "@RedRover"

🚀 A new era has begun, we cheer, With RedRover's GPT-4, we're here! From OpenAI, we've made the switch, To bring improvements without a hitch! 🎉

[github-actions[bot]]

:robot: OpenAI

### Summary
This PR replaces the OpenAI API with the RedRover API, changing the default model from `gpt-3.5-turbo` to `gpt-4`. The changes involve a significant modification in the external service used for fetching data and may impact the behavior of the code.

| Files                   | Summary                                                                                                   |
|-------------------------|-----------------------------------------------------------------------------------------------------------|
| action.yml, src/review.ts | Changes the default value of `openai_heavy_model`, updates instances of "@openai" to "@RedRover", and fetches data from RedRover instead of OpenAI. |

---

Chat with 🤖 OpenAI Bot (@openai)

• Reply on review comments left by this bot to ask follow-up questions. A review comment is a comment on a diff or a file.
• Invite the bot into a review comment chain by tagging @openai in a reply.

Code suggestions

• The bot may make code suggestions, but please review them carefully before committing since the line number ranges may be misaligned.
• You can edit the comment made by the bot and manually tweak the suggestion if it is slightly off.

Ignoring further reviews

• Type @openai: ignore anywhere in the PR description to ignore further reviews from the bot.

---

---

In the recent run, only the files that changed from the base of the PR and between 9154cf6cf859021014f76056981147f3683204c1 and 0a49febe607e876fc74f97fd04736be00697c253 commits were reviewed.