Add new line to end of file

Added required new line at the end of the Magento\Framework\Data\Form\Filter\Trim
class.

See build reports for PR #12964

lib/internal/Magento/Framework/Data/Form/Filter/Trim.php

@@ -34,4 +34,4 @@ class Trim implements \Magento\Framework\Data\Form\Filter\FilterInterface
     {
         return $value;
     }
-}
+}
\ No newline at end of file