refactor(global): Upgrade config files with Laravel 10.

- Upgrade Kernel.php to match with Laravel 10
- Upgrade Notes
- Add returns

app/Providers/RouteServiceProvider.php

@@ -11,7 +11,7 @@
 class RouteServiceProvider extends ServiceProvider
 {
     /**
-     * The path to the "home" route for your application.
+     * The path to your application's "home" route.
      *
      * Typically, users are redirected here after authentication.
      *
@@ -21,10 +21,8 @@ class RouteServiceProvider extends ServiceProvider
 
     /**
      * Define your route model bindings, pattern filters, and other route configuration.
-     *
-     * @return void
      */
-    public function boot()
+    public function boot(): void
     {
         RateLimiter::for('api', function (Request $request) {
             return Limit::perMinute(60)->by($request->user()?->id ?: $request->ip());