update [skip ci]

.gitlab-ci.yml

+---
+
+stages:
+  - run
+
+
+default:
+  tags:
+    - default-env
+
+
+#
+# The `root-keys-job` triggers the setup-hosts pipeline whenever the
+# `root_keys` file changes. This setup ensures that updates to the SSH
+# keys in the `root_keys` file are consistently applied across all
+# machines, allowing for effective management of SSH connection
+# permissions.
+#
+root-keys-job:
+  stage : run
+  script:
+    - |
+      
+      curl --request POST                             \
+           --form ref=main                            \
+           --form variables[TAGS]='users,root'        \
+           "$SETUP_HOSTS_TRIGGER_URL"
+
+  only:
+    changes:
+      - "root_keys"
+
+...