style: renames classe name

src/TestCases/IgnorableTestCase.php

@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\TestCases;
+
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @internal
+ */
+final class IgnorableTestCase extends TestCase
+{
+    // ...
+}