CI: bump docker engine max version

Author: Alex-Welsh

etc/kayobe/ansible/stackhpc-cloud-tests.yml

@@ -142,7 +142,7 @@
             # Inclusive min
             sct_docker_version_min: "24.0.0"
             # Exclusive max
-            sct_docker_version_max: "28.1.0"
+            sct_docker_version_max: "29.0.0"
             sct_selinux_state: "{{ selinux_state }}"
           failed_when: host_results.rc not in [0, 1]
           register: host_results