Update AppServiceProvider

Closes #107

app/Providers/AppServiceProvider.php

@@ -6,6 +6,7 @@ use App\User;
 use Auth, Horizon;
 use App\Observers\UserObserver;
 use Illuminate\Support\Facades\Blade;
+use Illuminate\Support\Facades\Schema;
 use Illuminate\Support\ServiceProvider;
 
 class AppServiceProvider extends ServiceProvider
@@ -17,6 +18,8 @@ class AppServiceProvider extends ServiceProvider
      */
     public function boot()
     {
+        Schema::defaultStringLength(191);
+
         User::observe(UserObserver::class);
 
         Horizon::auth(function ($request) {