Imports without model events trait on seeds (#39974)

Author: nunomaduro

src/Illuminate/Database/Console/Seeds/stubs/seeder.stub

@@ -2,6 +2,7 @@
 
 namespace Database\Seeders;
 
+use Illuminate\Database\Console\Seeds\WithoutModelEvents;
 use Illuminate\Database\Seeder;
 
 class {{ class }} extends Seeder