Update Simplified Chinese dpkg translation

debian/changelog

@@ -25,6 +25,7 @@ dpkg (1.15.8.7) UNRELEASED; urgency=low
   * Norwegian Bokmål (Hans Fredrik Nordhaug).
   * Portuguese (Miguel Figueiredo). Closes: #605506
   * Russian (Yuri Kozlov). Closes: #607292
+  * Simplified Chinese (Aron Xu).
   * Slovak (Ivan Masár). Closes: #607302
   * Spanish (Javier Fernandez-Sanguino).