Add ẏ character
### Requirements

- [x] I have searched the [issues](https://github.com/ryanoasis/nerd-fonts/issues) for my request and found nothing related or helpful
- [x] I have checked the [FAQ](https://github.com/ryanoasis/nerd-fonts/wiki/FAQ-and-Troubleshooting) for help
- [x] I have reviewed the [Wiki](https://github.com/ryanoasis/nerd-fonts/wiki) for relevant information

### Problem Description

I have found that the `ẏ` Symbol is missing from caskadia cove nf. Can you add it?

### Desired Solution

_No response_

### Alternatives Considered

_No response_

### Additional Context

_No response_