update debian/changelog

debian/changelog

+ruby-typed-array (0.1.2-6) unstable; urgency=medium
+
+  * Move Vcs-* to salsa.debian.org.
+  * migrate to gemwatch.debian.net
+  * eliminate lintian warning: insecure-copyright-format-uri
+  * support autopkgtest
+  * Bump debhelper compatibility level to 11.
+  * Update Standards-Version to 4.1.4.
+
+ -- HIGUCHI Daisuke (VDR dai) <dai@debian.org>  Thu, 31 May 2018 13:22:18 +0900
+
 ruby-typed-array (0.1.2-5) unstable; urgency=medium
 
   [ Cédric Boutillier ]