Spring Security Make PublicKeyCredentialCreationOptions Serializable

We should make PublicKeyCredentialCreationOptions implement Serializable. This will ensure that it an be persisted in distributed HttpSession setups.

Comment From: jzheaux

Completed as part of https://github.com/spring-projects/spring-security/issues/16481

Comment From: re1709

Completed as part of #16481

Sorry i'm failing to see these changes have been completed? The PublicKeyCredentialCreationOptions is still not serializable in 6.4.X or 6.5.X and cannot be used with JDBC Session.