Update mariadb Docker tag to v12

arcade-system/romm.yaml

@@ -388,7 +388,7 @@ spec:
     spec:
       containers:
         - name: mariadb
-          image: mariadb:11
+          image: mariadb:12
           env:
             - name: MARIADB_ROOT_PASSWORD
               valueFrom:

bookstack-system/bookstack.yaml

@@ -71,7 +71,7 @@ spec:
     spec:
       containers:
         - name: mariadb
-          image: mariadb:11
+          image: mariadb:12
           imagePullPolicy: IfNotPresent
           env:
             - name: MYSQL_ROOT_PASSWORD

mon-system/monitoring.yaml

@@ -529,7 +529,7 @@ spec:
         runAsGroup: 472
       containers:
         - name: grafana
-          image: grafana/grafana:13.0.2
+          image: grafana/grafana:12.4.4
           ports:
             - containerPort: 3000
               name: http