Adapt API test to expect 403 status code

After aplying the fix galaxyproject#13056, `test_sharing_private_history_makes_datasets_public` will now return a proper 403 status code instead of 400.

lib/galaxy_test/api/test_histories.py

@@ -586,7 +586,7 @@ def test_sharing_private_history_makes_datasets_public(self):
         # Other users cannot access the dataset
         with self._different_user():
             show_response = self._get(f"datasets/{hda_id}")
-            self._assert_status_code_is(show_response, 400)
+            self._assert_status_code_is(show_response, 403)
 
         sharing_response = self._set_resource_sharing(history_id, "publish")
         assert sharing_response["published"] is True