:gear: tweaking drone push-deploy yaml

.drone.yml

 kind: pipeline
 name: deploy
 depends_on:
-    # Must run after the first pipeline
-    - frontend_run_build
-    - backend_run_build
+    - backend_run_tests
 trigger:
     status:
-        # Only runs if the first pipeline was fully successful
         - success
-        # Only runs on the master branch
     branch:
-        - master
+        - dev
 
 steps:
     # post-receive hook
     - name: push commit
       image: appleboy/drone-git-push:0.2.0-linux-amd64
       settings:
-          branch: master
+          branch: dev
           remote: maeda@165.232.128.85:/opt/staging/siimee.git
           remote_name: staging
           force: true