Add the post-migration diff in the Slack threads.
Context
The post-deploy pipeline will add a note to the release issue that will include the post-migrations to be executed, outside of the Delivery team and the Compliance department, it's not common for engineers to use the release issue to keep track of the deployment.
Proposal
Similar to what we do with diffs for each package that is deployed to our environment, let's thread the post-deploy migrations on the messages that will be sent to slack when the post-deploy pipeline is executed.
This will allow engineers to know what post migrations were executed in each run.