fix(skeleton): respect black when generating a newcube

cubicweb/devtools/devctl.py

@@ -727,7 +727,7 @@ layout, and a full featured cube with "full" layout.',
             'distname': distname,
             'shortdesc': shortdesc,
             'longdesc': longdesc or shortdesc,
-            'dependencies': dependencies,
+            'dependencies': str(dependencies).replace("'", '"'),  # to respect black formatting
             'version': cubicwebversion,
             'year': str(date.today().year),
             'author': self['author'],