Update the watch file to point to the new upstream location.

debian/changelog

@@ -4,6 +4,7 @@ libsysstat (0.4.1-0ubuntu1) UNRELEASED; urgency=medium
   * Update Vcs-* and Maintainer to Lubuntu values.
   * Update copyright.
   * Bump build dependencies.
+  * Update the watch file to point to the new upstream location.
 
  -- Simon Quigley <tsimonq2@ubuntu.com>  Mon, 21 May 2018 21:25:23 -0500
 

debian/watch

@@ -1,3 +1,3 @@
 version=4
 opts="pgpsigurlmangle=s/$/.asc/" \
-    https://github.com/lxde/libsysstat/releases .*/libsysstat-([\d\.]+).tar.xz
+    https://github.com/lxqt/libsysstat/releases .*/libsysstat-([\d\.]+).tar.xz