CourseGroup API is not working with JWT authentication

Describe the bug
Accessing the CourseGroup API works with an admin user, but doesn't work for regular user. However, it should be accessible to all users for GET responses.

To Reproduce
Steps to reproduce the behavior:

1. Login to the site, and get your idToken
2. Go to CourseGroup api, and you will be unauthorized.

Expected behavior
The user should have an access to this API.

Screenshots

Additional context
Basically it's just changing the permission class in the View. will do.