CCM-8585: newline

Author: alexnuttall

.github/actions/normalize-branch-name/action.yaml

@@ -14,4 +14,4 @@ runs:
         starting_from_jira_ref=$(echo $stripped | grep -Eo '\d{4,}.*')
         with_fallback=${starting_from_jira_ref:-$stripped}
         chopped=$(echo $with_fallback | head -c 15)
-        echo $chopped >> $GITHUB_OUTPUT
+        echo $chopped >> $GITHUB_OUTPUT