Enable Null checking in spring-security-webauthn via JSpecify

Closes gh-17839

Signed-off-by: M.Bozorgmehr <[email protected]>

Author: rwinch

webauthn/src/main/java/org/springframework/security/web/webauthn/management/RelyingPartyRegistrationRequest.java

@@ -16,6 +16,8 @@
 
 package org.springframework.security.web.webauthn.management;
 
+import org.jspecify.annotations.Nullable;
+
 import org.springframework.security.web.webauthn.api.PublicKeyCredentialCreationOptions;
 
 /**

webauthn/src/main/java/org/springframework/security/web/webauthn/management/WebAuthnRelyingPartyOperations.java

@@ -16,6 +16,8 @@
 
 package org.springframework.security.web.webauthn.management;
 
+import org.jspecify.annotations.Nullable;
+
 import org.springframework.security.core.Authentication;
 import org.springframework.security.web.webauthn.api.CredentialRecord;
 import org.springframework.security.web.webauthn.api.PublicKeyCredentialCreationOptions;