Merge pull request python-social-auth#362 from aramboi/bug/cognito-wr…

…ong-last-name

Use the value from family_name attribute for last_name in Cognito backend

social_core/backends/cognito.py

@@ -23,7 +23,7 @@ def user_data_url(self):
     def get_user_details(self, response):
         """Return user details from their cognito pool account"""
         first_name = response.get('given_name') or ''
-        last_name = response.get('given_name') or ''
+        last_name = response.get('family_name') or ''
         fullname, first_name, last_name = self.get_user_names(
             first_name=first_name,
             last_name=last_name,