Update standards version to 4.6.1, 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Fixes: lintian: out-of-date-standards-version
See-also: https://lintian.debian.org/tags/out-of-date-standards-version.html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

@@ -13,7 +13,7 @@ Build-Depends: debhelper-compat (= 13),
                ruby-rails,
                ruby-rack-mobile-detect,
                ruby-mocha
-Standards-Version: 4.6.0
+Standards-Version: 4.6.1
 Vcs-Browser: https://salsa.debian.org/ruby-team/ruby-mobile-fu
 Vcs-Git: https://salsa.debian.org/ruby-team/ruby-mobile-fu.git
 Homepage: https://github.com/benlangfeld/mobile-fu