Added empty dependencies value to ECS Deploy job

changelogs/unreleased/228674-no-dependencies-on-deploy-ecs.yml

+---
+title: Add empty dependencies value to ECS Deploy job
+merge_request: 36862
+author:
+type: fixed

lib/gitlab/ci/templates/Jobs/Deploy/ECS.gitlab-ci.yml

@@ -10,6 +10,7 @@
 
 .deploy_to_ecs:
   image: 'registry.gitlab.com/gitlab-org/cloud-deploy/aws-ecs:latest'
+  dependencies: []
   script:
     - ecs update-task-definition