2.66.5
(fix): Mock-server tests now serialize nullable date-time query and header parameters with millisecond precision so they match what the runtime sends. Previously, when a date-time field was wrapped in a nullable container (e.g. with respect-nullable-schemas: true and coerce-optional-schemas-to-nullable: false), the generated WithParam("since", "2024-01-15T09:30:00Z") omitted milliseconds while the SDK actually sent 2024-01-15T09:30:00.000Z, causing WireMock to return 404.