debian: bump debhelper-compat version to 13

Author: bluca

debian/control

@@ -3,7 +3,7 @@ Section: admin
 Priority: optional
 Rules-Requires-Root: no
 Maintainer: Luca Boccassi <bluca@debian.org>
-Build-Depends: debhelper-compat (= 12), dh-exec,
+Build-Depends: debhelper-compat (= 13), dh-exec,
 Standards-Version: 4.6.0
 Homepage: https://systemd.io/COREDUMP_PACKAGE_METADATA/
 Vcs-Git: https://github.com/systemd/package-notes.git