Update Thai programs translation

Closes: #690678

Signed-off-by: Guillem Jover <guillem@debian.org>

debian/changelog

@@ -65,6 +65,7 @@ dpkg (1.16.9) UNRELEASED; urgency=low
   * Russian (Yuri Kozlov). Closes: #688050, #690415
   * Slovak (Ivan Masár). Closes: #690426
   * Swedish (Peter Krefting).
+  * Thai (Theppitak Karoonboonyanan). Closes: #690678
   * Traditional Chinese (imacat). Closes: #687002
 
   [ Updated scripts translations ]