JIRA: OCISDEV-140

After following the steps for preparing release Addams - 7.2.0-rc.1, the Changelog summary was missing - https://github.com/owncloud/ocis/releases/tag/v7.2.0-rc.1

Seems the drone.star file is missing proper branch refs.
The following refs should be added:

• "refs/heads/stable-*"

The target branches should be updated too:

• "branch": "stable-7.2"
• "target_branch": "docs-stable-7.2"