po: Update Esperanto programs translation

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

debian/changelog

@@ -3,6 +3,7 @@ dpkg (1.17.23) UNRELEASED; urgency=low
   [ Updated programs translations ]
   * Basque (Iñaki Larrañaga Murgoitio). Closes: #771893
   * Czech (Miroslav Kure).
+  * Esperanto (Felipe Castro).
   * French (Sébastien Poher).
   * Italian (Milo Casagrande).
   * Swedish (Peter Krefting).