Update Ubuntu base image for container build

Author: seunghun1ee

etc/kayobe/kolla/kolla-build.conf

@@ -3,7 +3,7 @@
 {# snapshots, so pin to a specific tag. #}
 {# This tag should be updated when Ubuntu package repo snapshot versions are changed. #}
 {% if kolla_base_distro == 'ubuntu' %}
-base_tag = jammy-20231004
+base_tag = jammy-20240808
 {# Similarly pinning to Rocky 9 minor version used in our repos #}
 {% elif kolla_base_distro == 'rocky' %}
 base_tag = 9.{{ stackhpc_pulp_repo_rocky_9_minor_version }}