Fix missing "lbuchs", after resolving last conflict

It seems that when solving the conflict in my pr when the latest staging branch was merged to master, I accidentally deleted "lbuchs", I added it back

data/web/inc/prerequisites.inc.php

@@ -61,7 +61,7 @@ $tfa = new RobThree\Auth\TwoFactorAuth($OTP_LABEL, 6, 30, 'sha1', $qrprovider);
 
 // FIDO2
 $formats = $GLOBALS['FIDO2_FORMATS'];
-$WebAuthn = new \WebAuthn\WebAuthn('WebAuthn Library', $_SERVER['SERVER_NAME'], $formats);
+$WebAuthn = new lbuchs\WebAuthn\WebAuthn('WebAuthn Library', $_SERVER['SERVER_NAME'], $formats);
 // only include root ca's when needed
 if (getenv('WEBAUTHN_ONLY_TRUSTED_VENDORS') == 'y') $WebAuthn->addRootCertificates($_SERVER['DOCUMENT_ROOT'] . '/inc/lib/WebAuthn/rootCertificates');