fix: add class / xxx squash this commit

Signed-off-by: Josh Richards <josh.t.richards@gmail.com>

apps/settings/lib/Settings/Admin/Mail.php

@@ -6,6 +6,7 @@
 namespace OCA\Settings\Settings\Admin;
 
 use OCP\AppFramework\Http\TemplateResponse;
+use OCP\IBinaryFinder;
 use OCP\IConfig;
 use OCP\IL10N;
 use OCP\Settings\IDelegatedSettings;