Keycloak v25 support

[schwoerb]

Keycloak v25 made changes to the UI that are causing issues with using webauthn. Even with latest, I cannot get WebAuthN working in v25, while it works with v24 in the same environment.

DEBU[0012] HTTP Res Status="200 OK" http=client
The provided key handle is not present on the device, or was created with a different application parameter.
error while getting Webauthn challenge
github.com/versent/saml2aws/v2/pkg/provider/keycloak.(*Client).postWebauthnForm
github.com/versent/saml2aws/v2/pkg/provider/keycloak/keycloak.go:306
github.com/versent/saml2aws/v2/pkg/provider/keycloak.(*Client).doAuthenticate
github.com/versent/saml2aws/v2/pkg/provider/keycloak/keycloak.go:138
github.com/versent/saml2aws/v2/pkg/provider/keycloak.(*Client).Authenticate
github.com/versent/saml2aws/v2/pkg/provider/keycloak/keycloak.go:95
github.com/versent/saml2aws/v2/cmd/saml2aws/commands.Login
github.com/versent/saml2aws/v2/cmd/saml2aws/commands/login.go:107
main.main
github.com/versent/saml2aws/v2/cmd/saml2aws/main.go:196
runtime.main
runtime/proc.go:271
runtime.goexit
runtime/asm_arm64.s:1222
error posting Webauthn form
github.com/versent/saml2aws/v2/pkg/provider/keycloak.(*Client).doAuthenticate
github.com/versent/saml2aws/v2/pkg/provider/keycloak/keycloak.go:140
github.com/versent/saml2aws/v2/pkg/provider/keycloak.(*Client).Authenticate
github.com/versent/saml2aws/v2/pkg/provider/keycloak/keycloak.go:95
github.com/versent/saml2aws/v2/cmd/saml2aws/commands.Login
github.com/versent/saml2aws/v2/cmd/saml2aws/commands/login.go:107
main.main
github.com/versent/saml2aws/v2/cmd/saml2aws/main.go:196
runtime.main
runtime/proc.go:271
runtime.goexit
runtime/asm_arm64.s:1222
Error authenticating to IdP.
github.com/versent/saml2aws/v2/cmd/saml2aws/commands.Login
github.com/versent/saml2aws/v2/cmd/saml2aws/commands/login.go:109
main.main
github.com/versent/saml2aws/v2/cmd/saml2aws/main.go:196
runtime.main
runtime/proc.go:271
runtime.goexit
runtime/asm_arm64.s:1222

[archoversight]

I am able to successfully use my Yubikey 4 against Keycloak on Keycloak 25, but once I use a Yubikey 5, I get the same error.

I am guessing it's related to FIDO1/U2F vs FIDO2.