Update some code, add security txt file.

app/Http/Middleware/AuthenticateTwoFactor.php

@@ -56,6 +56,8 @@ class AuthenticateTwoFactor
      * @param array   ...$guards
      *
      * @return \Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector|mixed
+     * @throws \Psr\Container\NotFoundExceptionInterface
+     * @throws \Psr\Container\ContainerExceptionInterface
      * @throws \Illuminate\Container\EntryNotFoundException
      */
     public function handle($request, Closure $next, ...$guards)

app/Http/Middleware/Binder.php

@@ -63,6 +63,7 @@ class Binder
      *
      * @return mixed
      *
+     * @throws \LogicException
      */
     public function handle($request, Closure $next, ...$guards)
     {

app/Http/Middleware/IsDemoUser.php

@@ -39,6 +39,7 @@ class IsDemoUser
      * @param  \Closure                 $next
      *
      * @return mixed
+     * @throws \RuntimeException
      */
     public function handle(Request $request, Closure $next)
     {