Big Sur needs our app to be signed

## Expected functionality

The hook executes

## Actual functionality

![image](https://user-images.githubusercontent.com/3866197/122674229-288a6e00-d1a2-11eb-9563-d18ba47fc1fe.png)


## Steps to reproduce

Run the hook on Big Sur

## Version of hook

Latest

## Operating System

mac OS 11
