Update French scripts translation

Closes: #746350

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

debian/changelog

@@ -1,6 +1,7 @@
 dpkg (1.17.9) UNRELEASED; urgency=low
 
   [ Updated scripts translations ]
+  * French (Steve Petruzzello). Closes: #746350
   * German (Helge Kreutzmann).
 
   [ Updated manpages translations ]