Add owner field to the alerts list (#12420)

Co-authored-by: Bogdan Kyryliuk <bogdankyryliuk@dropbox.com>
diff --git a/superset/views/alerts.py b/superset/views/alerts.py
index a6e650c..a72fd67 100644
--- a/superset/views/alerts.py
+++ b/superset/views/alerts.py
@@ -114,6 +114,7 @@
 
     list_columns = (
         "label",
+        "owners",
         "database",
         "sql",
         "pretty_config",