[LibreNMS] Correcting mariadb sed string for Debian 13 default in install/librenms-install.sh, website config for Debian 13 #9369 (#9370)

* Correcting mariadb config string sed modification to match mariadb provided in Debian 13

* Correcting Debian version for LibreNMS to 13 to match installation script.

Author: htmlspinnr

frontend/public/json/librenms.json

@@ -23,7 +23,7 @@
         "ram": 2048,
         "hdd": 4,
         "os": "Debian",
-        "version": "12"
+        "version": "13"
       }
     }
   ],

install/librenms-install.sh

@@ -65,7 +65,7 @@ chmod -R ug=rwX /opt/librenms/bootstrap/cache /opt/librenms/storage /opt/librenm
 msg_ok "Configured LibreNMS"
 
 msg_info "Configure MariaDB"
-sed -i "/\[mysqld\]/a innodb_file_per_table=1\nlower_case_table_names=0" /etc/mysql/mariadb.conf.d/50-server.cnf
+sed -i "/\[mariadb\]/a innodb_file_per_table=1\nlower_case_table_names=0" /etc/mysql/mariadb.conf.d/50-server.cnf
 systemctl enable -q --now mariadb
 msg_ok "Configured MariaDB"