ci(gitlab-ci): use templates from a common repository

.gitlab-ci.yml

@@ -14,6 +14,7 @@ include:
       - "templates/create-release-on-heptapod.yml"  # this will create a release on heptapod
       - "templates/upload-to-pypi.yml"  # on a new mercurial tag (expected to be done with release-new), will push a release on pypi
   - ".gitlab-ci-extended.yml"
+
 stages:
   - lint
   - tests