[RI-2369] Upgrade drone-plugin-reddit-deploy to the latest version (prometheus-community#23)

Author: areitz

.drone.yml

@@ -124,7 +124,7 @@ concurrency:
   limit: 1
 steps:
   - name: Deploy Manifest - prod-3-ue1d
-    image: artifactory.build.ue1.snooguts.net/reddit-docker-prod/drone-plugin-reddit-deploy:2.0
+    image: artifactory.build.ue1.snooguts.net/reddit-docker-prod/drone-plugin-reddit-deploy:2
     pull: always
     depends_on:
       - clone