Apply fixes from StyleCI (#14899)

Co-authored-by: StyleCI Bot <[email protected]>

tests/Unit/Util/StringHelperTest.php

@@ -70,8 +70,7 @@ class StringHelperTest extends TestCase
         };
         $this->assertTrue(StringHelpers::isStringable($stringable));
 
-        $nonstringable = new class
-        {
+        $nonstringable = new class {
         };
         $this->assertFalse(StringHelpers::isStringable($nonstringable));
     }