Fix execution of notify step in CI

.drone.yml

@@ -34,7 +34,10 @@ steps:
     settings:
       urls:
         - https://msgbus.mills.io/ci.mills.io
-    trigger:
+    depends_on:
+      - build-and-test
+      - build-image-push
+    when:
       status:
         - success
         - failure