Update webauthn to version 2.0.0

[david-venhoff]

Motivation

Webauthn had a breaking update with version 2.0.0 which will require some minor refactoring in our codebase.

[nkclemson]

Hi. I am a Django developer with six years of experience. I would like to start contributing to integreat-cms starting with this issue if there is no problem then. Would it be possible to assign this to me?

[timobrembeck]

@nkclemson Awesome, thanks a lot for your interest in our project! :rocket: Sure, feel free to work on this and ask any questions if something is unclear.

[david-venhoff]

Information how to upgrade: https://github.com/duo-labs/py_webauthn/releases/tag/v2.0.0