Fix validation rule for role

Signed-off-by: pacoorozco <[email protected]>

app/Http/Requests/UserUpdateRequest.php

@@ -90,7 +90,7 @@ public function enabled(): bool
 
     public function role(): Roles
     {
-        $roleName = $this->string('role');
+        $roleName = $this->input('role');
 
         return Roles::fromValue($roleName);
     }