fix(config): Update logo font class conditionally

- Update the logo font class to be conditional based on class existence
- Use `class_exists` to check for the existence of the `FigletString` class

Author: [email protected]

config/logo.php

@@ -10,6 +10,8 @@
  * This source file is subject to the MIT license that is bundled.
  */
 
+use LaravelZero\Framework\Components\Logo\FigletString;
+
 /** @noinspection PhpInternalEntityUsedInspection */
 return [
     /*
@@ -36,7 +38,7 @@
     |
     */
 
-    'font' => LaravelZero\Framework\Components\Logo\FigletString::DEFAULT_FONT,
+    'font' => class_exists(FigletString::class) ? FigletString::DEFAULT_FONT : null,
 
     /*
     |--------------------------------------------------------------------------