fix(security): add csrf filter + prevent xss attacks by escaping user input

- update CI4 to v4.1.9's stable production package
- update php and js dependencies to latest

app/Controllers/ColorsController.php

@@ -33,6 +33,7 @@ class ColorsController extends Controller
                 foreach ($color as $variable => $value) {
                     $colorsCssBody .= "--color-{$variable}: {$value[0]} {$value[1]}% {$value[2]}%;";
                 }
+
                 $colorsCssBody .= '}';
             }