fix(semaphore): make volume creation task more robust

ansible/roles/semaphore/tasks/main.yml

@@ -40,7 +40,9 @@
       ansible.builtin.command:
         cmd: "podman volume create {{ item }}"
       become: true
-      changed_when: "'already exists' not in stderr"
+      register: vol_result
+      changed_when: vol_result.stdout | length > 0
+      failed_when: false
       loop:
         - "{{ semaphore_postgres_volume }}"
         - "{{ semaphore_data_volume }}"