Publish all things

What does this MR do?

Why is this MR needed?

• jira: https://ufz-rdm.atlassian.net/browse/TSM-560
• it should be possible to programmatically publish the message of the function thing_update in run_configdb_updater.py for all things

How to test this MR?

Closes #164 (closed)

⚠️

Do not change the auto-generated Merge commit message or Squash commit message, otherwise the release pipeline fails!