Convert `optional()` to nullsafe operator

app/Providers/RouteServiceProvider.php

@@ -57,10 +57,10 @@ class RouteServiceProvider extends ServiceProvider
     protected function configureRateLimiting()
     {
         RateLimiter::for('api', function (Request $request) {
-            return Limit::perMinute(60)->by(optional($request->user())->id ?: $request->ip());
+            return Limit::perMinute(60)->by($request->user()?->id ?: $request->ip());
         });
         RateLimiter::for('web', function (Request $request) {
-            return Limit::perMinute(40)->by(optional($request->user())->id ?: $request->ip());
+            return Limit::perMinute(40)->by($request->user()?->id ?: $request->ip());
         });
     }
 }