Only send notifications to commits@ ML (#861)

This PR modifies the Apache mailing list notifications so that commits, issues, and pull request notifications are sent to the [email protected] mailing list. If you would like these notifications, please to subscribe to the commits mailing list or use the GitHub "watch" feature.

Mailing list discussion for this change: https://lists.apache.org/thread/j6y57kr4180xblh7voyrjw47blgmghwt

Author: michaeljmarshall

.asf.yaml

@@ -42,4 +42,12 @@ github:
     # disable merge button:
     merge:   false
     # disable rebase button:
-    rebase:  false
+    rebase:  false
+
+
+notifications:
+  commits:      [email protected]
+  issues:       [email protected]
+  pullrequests: [email protected]
+  discussions:  [email protected]
+  jira_options: link label