Make disconnect options required

Author: npm1

spec/index.bs

@@ -441,7 +441,7 @@ This specification introduces a new type of {{Credential}}, called an {{Identity
 
   [Exposed=Window, SecureContext]
   interface IdentityCredential : Credential {
-    static Promise<undefined> disconnect(optional IdentityCredentialDisconnectOptions options = {});
+    static Promise<undefined> disconnect(IdentityCredentialDisconnectOptions options);
     readonly attribute USVString? token;
     readonly attribute boolean isAutoSelected;
   };