roles/mariadb: use MariaDB 10.11

The server has already been updated from 10.6 to 10.11.

See: https://mariadb.com/kb/en/upgrading-from-mariadb-10-6-to-mariadb-10-11/

roles/mariadb/tasks/main.yml

@@ -28,9 +28,9 @@
     - packages
     - mariadb
 
-- name: Add MariaDB 10.6 repo
+- name: Add MariaDB 10.11 repo
   ansible.builtin.apt_repository:
-    repo: deb [arch=amd64 signed-by=/etc/apt/keyrings/mariadb_release_signing_key.asc] https://dlm.mariadb.com/repo/mariadb-server/10.6/repo/debian {{ ansible_distribution_release
+    repo: deb [arch=amd64 signed-by=/etc/apt/keyrings/mariadb_release_signing_key.asc] https://dlm.mariadb.com/repo/mariadb-server/10.11/repo/debian {{ ansible_distribution_release
       }} main
     filename: mariadb
     state: present