Update repo metadata to disable certain email notifications

.asf.yaml

@@ -7,6 +7,7 @@ github:
 
 notifications:
   commits:      commits@xmlgraphics.apache.org
-  issues:       fop-dev@xmlgraphics.apache.org
-  pullrequests: fop-dev@xmlgraphics.apache.org
+  # issues:       fop-dev@xmlgraphics.apache.org
+  # pullrequests: fop-dev@xmlgraphics.apache.org
+  # jobs: fop-dev@xmlgraphics.apache.org
   jira_options: link label