Update wordpress' mariadb pod annotations reflecting changed helm value name

flux2/apps/wordpress/wordpress-values-configmap.yaml

@@ -63,7 +63,7 @@ data:
           ## Enable MariaDB persistence using Persistent Volume Claims.
           enabled: true
           existingClaim: "wordpress-mariadb"
-        annotations:
+        podAnnotations:
           # Let the backup system include nextcloud database data.
           backup.velero.io/backup-volumes: "data"
         resources: