use new dh-sequence-python3

debian/control

@@ -4,7 +4,7 @@ Uploaders: Ghislain Antony Vaillant <ghisvail@gmail.com>
 Section: python
 Priority: optional
 Build-Depends: debhelper-compat (= 13),
-               dh-python,
+               dh-sequence-python3,
                python-agate-doc <!nodoc>,
                python3-agate <!nocheck> <!nodoc>,
                python3-all,

debian/rules

@@ -12,7 +12,7 @@ export PYBUILD_AFTER_TEST = rm -rf {build_dir}/examples
 endif
 
 %:
-	dh $@ --with python3,sphinxdoc --buildsystem=pybuild
+	dh $@ --with sphinxdoc --buildsystem=pybuild
 
 override_dh_auto_clean:
 	dh_auto_clean