Correct Repository.get_workflows() (#1518)

The API endpoint Repository.get_workflows() calls returns data in a list
item, not directly, leading to some head scratching when calling it
against GitHub. Re-record the replay data.

github/Repository.py

@@ -3011,6 +3011,7 @@ class Repository(github.GithubObject.CompletableGithubObject):
             self._requester,
             self.url + "/actions/workflows",
             None,
+            list_item="workflows",
         )
 
     def get_workflow(self, id_or_name):