Update stripe from 2.34.0 to 2.35.1

Author: pyup-bot

requirements/pip.txt

@@ -76,7 +76,7 @@ pytz==2019.2
 Unipath==1.1
 django-kombu==0.9.4
 mock==3.0.5
-stripe==2.34.0
+stripe==2.35.1
 
 # unicode-slugify==0.1.5 is not released on PyPI yet
 git+https://github.com/mozilla/unicode-slugify@b696c37#egg=unicode-slugify==0.1.5