correct rules format for deploy_ood_proxy_node

- Updated the `rules` section to be an array containing hashes and arrays of hashes

.gitlab-ci.yml

@@ -69,4 +69,6 @@ deploy_ood_proxy_node:
       # Store the instance ID in variables.env for later use
       echo "PROXY_INSTANCE_ID=$PROXY_INSTANCE_ID" >> $CI_PROJECT_DIR/variables.env
   rules:
-   when: manual
+    - if: $CI_PIPELINE_SOURCE == 'merge_request_event'
+    - if: $CI_PIPELINE_SOURCE == 'schedule'
+    - when: manual