add alert verb (#1270)

* add alert verb

* update dependencies

* Update package-lock.json

* remove await taskDone

lib/tasks/make_task.js

@@ -96,6 +96,9 @@ function makeTask(logger, obj, parent) {
     case TaskName.Tag:
       const TaskTag = require('./tag');
       return new TaskTag(logger, data, parent);
+    case TaskName.Alert:
+      const TaskAlert = require('./alert');
+      return new TaskAlert(logger, data, parent);
   }
 
   // should never reach