Fix user issue introduced in composer update

In v8.32.0, laravel/framework#36504 was merged which fixes null being
treated as true by the validator, but also enforces strict checking for
boolean values given to the required_unless rule. That's not necessarily
a bad thing, it just means we can't be passing `1` when we want `true`.

When we use `1`, user tests fail because while we pass `'user_group' =>
true` in the request data, the validator checks explicitly for `1` which
it doesn't see, so it says "gid is required unless user group is in 1".
We don't want that.

app/Http/Requests/System/CreateUser.php

@@ -7,7 +7,7 @@ class CreateUser extends SaveUser
     public function rules(): array
     {
         return array_merge(parent::rules(), [
-            'gid' => 'integer|required_unless:user_group,1',
+            'gid' => 'integer|required_unless:user_group,true',
             'system' => 'boolean|nullable',
             'create_home' => 'boolean',
             'user_group' => 'boolean',