Update lbuchs/WebAuthn

[adamxp12]

Any version newer than 1.0.0 causes MAJOR issues.

Mostly it just flat out refuses the challenge. I have confirmed that the challenge being used at the getCreateArgs portion is being saved to the session and is then passed to processCreate but the library is just saying it is invalid.

Other than a string conversion I am doing to solve a PHP_Incomplete_Class error when saving the challenge to $_SESSION I cant see any difference between my code and the example code for the WebAuthn library.

If any one knows a solution to updating this project please do a pull request. I have spent a few hours on this now but lack the time to dedicate to diagnosing it