bugfix: added resource group for ansible-builder

.gitlab-ci.yml

@@ -21,6 +21,8 @@ ansible-lint-job:
     - dind
 
 ansible-builder-job:
+  # A resource group ensures a job is mutually exclusive across different pipelines for the same project.
+  resource_group: deployment
   stage: ansible-builder
   before_script:
     - cd ansible-builder