Add Serializable for ImmutablePublicKeyCredentialUserEntity

Author: ngocnhan-tran1996

config/src/test/java/org/springframework/security/SpringSecurityCoreVersionSerializableTests.java

@@ -125,7 +125,8 @@
 import org.springframework.security.saml2.provider.service.authentication.TestSaml2RedirectAuthenticationRequests;
 import org.springframework.security.web.authentication.WebAuthenticationDetails;
 import org.springframework.security.web.authentication.preauth.PreAuthenticatedAuthenticationToken;
-import org.springframework.security.web.webauthn.api.Bytes;
+import org.springframework.security.web.webauthn.api.PublicKeyCredentialUserEntity;
+import org.springframework.security.web.webauthn.api.TestPublicKeyCredentialUserEntity;
 
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.fail;
@@ -322,7 +323,8 @@ class SpringSecurityCoreVersionSerializableTests {
 			token.setDetails(details);
 			return token;
 		});
-		generatorByClassName.put(Bytes.class, (r) -> Bytes.random());
+		generatorByClassName.put(PublicKeyCredentialUserEntity.class,
+				(r) -> TestPublicKeyCredentialUserEntity.userEntity().build());
 	}
 
 	@ParameterizedTest

web/src/main/java/org/springframework/security/web/webauthn/api/ImmutablePublicKeyCredentialUserEntity.java

@@ -16,6 +16,8 @@
 
 package org.springframework.security.web.webauthn.api;
 
+import org.springframework.security.core.SpringSecurityCoreVersion;
+
 /**
  * <a href=
  * "https://www.w3.org/TR/webauthn-3/#dictdef-publickeycredentialuserentity">PublicKeyCredentialUserEntity</a>
@@ -28,6 +30,8 @@
  */
 public final class ImmutablePublicKeyCredentialUserEntity implements PublicKeyCredentialUserEntity {
 
+	private static final long serialVersionUID = SpringSecurityCoreVersion.SERIAL_VERSION_UID;
+
 	/**
 	 * When inherited by PublicKeyCredentialUserEntity, it is a human-palatable identifier
 	 * for a user account. It is intended only for display, i.e., aiding the user in