There is a zypper core module for ansible (https://docs.ansible.com/ansible/latest/collections/community/general/zypper_module.html), which unfortunately does not show the available updates. I helped myself to write this ansible playbook years ago and thought maybe someone else could use it in their everyday life.

sles_udpates_list.yml

- hosts: sles
  become: true
  become_user: root
  tasks:
          - name: Zypper Uppate awk to file
            shell:
                " zypper ref && zypper lu | awk '{print $5, $7, $9 }' | sed -e '1,10d' | sed 's/\"//' > /tmp/awklist.txt "
            register: lsout
            tags: lsout

          - name: zeige awklist
            shell : cat /tmp/awklist.txt
            register: displaylist

          - debug: msg="{{displaylist.stdout_lines}}"