Fix compatibility with older versions

tests/TestClasses/TestMailable.php

@@ -3,25 +3,13 @@
 namespace Spatie\LaravelRay\Tests\TestClasses;
 
 use Illuminate\Mail\Mailable;
-use Illuminate\Mail\Mailables\Attachment;
 
 class TestMailable extends Mailable
 {
     public function build()
     {
-        return $this->markdown('mails.test');
-    }
-
-    /**
-     * Get the attachments for the message.
-     *
-     * @return array<int, \Illuminate\Mail\Mailables\Attachment>
-     */
-    public function attachments(): array
-    {
-        return [
-            Attachment::fromData(fn () => 'file1')->as('file_1.txt')->withMime('text/plain'),
-            Attachment::fromData(fn () => 'file2')->as('file_2.txt')->withMime('text/plain'),
-        ];
+        return $this->markdown('mails.test')
+            ->attachData('file1', 'file_1.txt')
+            ->attachData('file2', 'file_2.txt');
     }
 }