Polish translation update

Update to 1023t

debian/changelog

@@ -111,6 +111,7 @@ dpkg (1.16.2) UNRELEASED; urgency=low
   * Italian (Milo Casagrande). Closes: #627832, #657849
   * Swedish (Peter Krefting).
   * French (Christian Perrier)
+  * Polish (Michał Kułach). Closes: #658126
 
   [ Updated scripts translations ]
   * German (Helge Kreutzmann).