chore(deps): update mariadb docker tag to v12

Author: renovate[bot]

.devcontainer/docker-compose.yml

@@ -17,7 +17,7 @@ services:
       - sil
 
   ocpp-db:
-    image: mariadb:10.4.30 # pinned to patch-version because https://github.com/steve-community/steve/pull/1213
+    image: mariadb:12.2.2 # pinned to patch-version because https://github.com/steve-community/steve/pull/1213
     volumes:
       - ocpp-db-data:/var/lib/mysql
     ports: