Downgrade MariaDB to 10.11.11

There was performance regression found from MariaDB 10.11.12 and was
removed from upstream.[1]

[1] https://mariadb.com/kb/en/mariadb-10-11-12-release-notes/

Author: seunghun1ee

etc/kayobe/kolla-image-tags.yml

@@ -9,6 +9,8 @@ kolla_image_tags:
     ubuntu-noble: master-ubuntu-noble-20250509T092545
   bifrost_deploy:
     rocky-9: master-rocky-9-20250219T145044
+  mariadb:
+    ubuntu-noble: master-ubuntu-noble-20250513T135603
   ovn_sb_db_relay:
     rocky-9: master-rocky-9-20250305T111730
   prometheus: