Update mariadb Docker tag to v11

This MR contains the following updates:

Package	Update	Change
mariadb	major	10.7.1 -> 11.7.2

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testserver/docker_icinga/templates/docker-compose.yml

@@ -73,7 +73,7 @@ services:
 
   db:
 
-    image: mariadb:10.7.1
+    image: mariadb:11.7.2
     restart: always
     ports:
       - "{{ int_ip4 }}:{{mysql_port}}:3306"