[AIRFLOW-5740] Fix Transient failure in Slack test (#6407)
[AIRFLOW-5740] Fix Transient failure in Slack test (#6407)

* [AIRFLOW-5740] Fix Transient failure in Slack test

The transient failure is caused by Dict Ordering

* We were comparing string

We were comparing strings

(cherry picked from commit 401003e8e39da5810a1c4588ffe170fbc3110bbc)

owlabs/incubator-airflow,owlabs/incubator-airflow,owlabs/incubator-airflow,owlabs/incubator-airflow