Upstream IDL change from Trusted Types

Changes register to take a ScriptURLString rather than a USVString

docs/index.bs

@@ -713,7 +713,7 @@ spec: storage; urlPrefix: https://storage.spec.whatwg.org/
         readonly attribute ServiceWorker? controller;
         readonly attribute Promise<ServiceWorkerRegistration> ready;
 
-        [NewObject] Promise<ServiceWorkerRegistration> register(USVString scriptURL, optional RegistrationOptions options = {});
+        [NewObject] Promise<ServiceWorkerRegistration> register(ScriptURLString scriptURL, optional RegistrationOptions options = {});
 
         [NewObject] Promise<(ServiceWorkerRegistration or undefined)> getRegistration(optional USVString clientURL = "");
         [NewObject] Promise<FrozenArray<ServiceWorkerRegistration>> getRegistrations();