Please use FileSystem tools to finish the following task:

### Task Description

The `requirements.txt` file in the ThreeStudio project is used to install necessary Python libraries. However, the Zero123-related dependencies were accidentally deleted from the file. Your task is to restore these missing dependencies.

### Task Objectives

1. **Locate the requirements.txt file** in the test environment
2. **Identify the missing Zero123 dependencies** that need to be restored
3. **Add the required dependencies** to the requirements.txt file
4. **Ensure the file format is correct** (one dependency per line)
