fix: filter out disabled updates

lib/workers/repository/updates/flatten.js

@@ -55,5 +55,7 @@ function flattenUpdates(config, packageFiles) {
       updates.push(lockFileConfig);
     }
   }
-  return updates.map(update => filterConfig(update, 'branch'));
+  return updates
+    .filter(update => update.enabled)
+    .map(update => filterConfig(update, 'branch'));
 }