[fix] uuid version is deprecated
## Describe the bug
Per npm:
> npm WARN deprecated uuid@3.4.0: Please upgrade  to version 7 or higher.  Older versions may use Math.random() in certain circumstances, which is known to be problematic.  See https://v8.dev/blog/math-random for details.

## Actual behavior

Uses uuid < 7

## Expected behavior

Has no deprecated dependencies 

## Code to reproduce

npm i koa-session

## Checklist

- [X] I have searched through GitHub issues for similar issues.
- [X] I have completely read through the README and documentation.
- [X] I have tested my code with the latest version of Node.js and this package and confirmed it is still not working.
