Use debhelper-compat instead of debian/compat

debian/changelog

@@ -10,6 +10,7 @@ python-scripttest (1.3-2.1) UNRELEASED; urgency=medium
   * d/control: Remove ancient X-Python-Version field
   * d/control: Remove ancient X-Python3-Version field
   * Convert git repository from git-dpm to gbp layout
+  * Use debhelper-compat instead of debian/compat.
 
  -- Thomas Bechtold <toabctl@debian.org>  Sun, 07 Jan 2018 10:21:17 +0100
 

debian/compat

-9

debian/control

@@ -3,7 +3,7 @@ Section: python
 Priority: optional
 Maintainer: Debian Python Modules Team <python-modules-team@lists.alioth.debian.org>
 Standards-Version: 3.9.7
-Build-Depends: debhelper (>= 9),
+Build-Depends: debhelper-compat (= 9),
                dh-python,
                python-all (>= 2.6.6-3~),
                python-pytest,