Update standards version to 4.1.5, no changes needed.

Changes-By: lintian-brush
Fixes: lintian: out-of-date-standards-version
See-also: https://lintian.debian.org/tags/out-of-date-standards-version.html

debian/control

@@ -5,7 +5,7 @@ Homepage: https://lartc.org/wondershaper/
 Maintainer: Vince Mulhollon <vlm@debian.org>
 Uploaders: Rolf Leggewie <foss@rolf.leggewie.biz>
 Build-Depends: debhelper-compat (= 13)
-Standards-Version: 4.1.4
+Standards-Version: 4.1.5
 Vcs-Browser: https://github.com/leggewie-DM/wondershaper
 Vcs-Git: https://github.com/leggewie-DM/wondershaper.git