Bump debhelper compat to 12, no changes needed.

debian/changelog

@@ -2,6 +2,7 @@ libsysstat (0.4.2-0ubuntu1) UNRELEASED; urgency=medium
 
   * New upstream release.
   * Bump Standards-version to 4.3.0, no changes needed.
+  * Bump debhelper compat to 12, no changes needed.
 
  -- Simon Quigley <tsimonq2@ubuntu.com>  Fri, 25 Jan 2019 22:23:12 -0600
 

debian/compat

@@ -1 +1 @@
-11
+12

debian/control

@@ -6,7 +6,7 @@ Uploaders: Alf Gaida <agaida@siduction.org>,
            Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
 Section: libs
 Priority: optional
-Build-Depends: debhelper (>= 11),
+Build-Depends: debhelper (>= 12),
                lxqt-build-tools (>= 0.5.0)
 Standards-Version: 4.3.0
 Vcs-Browser: https://phab.lubuntu.me/source/libsysstat/