debian: Make sure we create a strict shlibs file

libhandy's ABI changes a lot so make sure we generate dependencies that
always require the upstream version built against.

debian/rules

@@ -12,6 +12,9 @@ override_dh_auto_build:
 	dh_auto_build
 	LC_ALL=C.UTF-8 ninja -C _build meson-libhandy-doc
 
+override_dh_makeshlibs:
+	dh_makeshlibs -VUpstream-Version
+
 override_dh_auto_test:
 ifeq ($(filter nocheck,$(DEB_BUILD_OPTIONS)),)
 	LC_ALL=C.UTF-8 xvfb-run ninja -C _build test