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

felhom-system/umami.yaml

@@ -85,7 +85,7 @@ spec:
     spec:
       containers:
         - name: postgres
-          image: postgres:18-alpine
+          image: postgres:16-alpine
           ports:
             - containerPort: 5432
           env:
@@ -167,7 +167,7 @@ spec:
       # Wait for DB to be available before starting Umami
       initContainers:
         - name: wait-for-db
-          image: postgres:18-alpine
+          image: postgres:16-alpine
           command:
             - sh
             - -c

jarrs-system/jarr-dev.yaml

@@ -81,7 +81,7 @@ spec:
         fsGroup: 999
       containers:
         - name: postgres
-          image: postgres:18-alpine
+          image: postgres:16-alpine
           imagePullPolicy: IfNotPresent
           env:
             - name: POSTGRES_USER

workout-system/sparkyfitness.yaml

@@ -69,7 +69,7 @@ spec:
         fsGroup: 999
       containers:
         - name: postgres
-          image: postgres:18-alpine
+          image: postgres:15-alpine
           env:
             - name: POSTGRES_USER
               valueFrom: