Fix merge workflow

Author: Jorgelmh

.github/workflows/_merge_into_release.yml

@@ -21,7 +21,6 @@ jobs:
       - uses: devmasx/[email protected]
         with:
           type: now
-          from_branch: master
           target_branch: release
           # @TODO: A dedicated RELEASE_TOKEN should be created in the repo settings
           #        and used for this task when in production.