chore(deps): update docker.io/mariadb docker tag to v12

Author: renovate[bot]

.drone.star

@@ -1,6 +1,6 @@
 DOCKER_PUSHRM_IMAGE = "docker.io/chko/docker-pushrm:1"
 DRONE_DOCKER_BUILDX_IMAGE = "docker.io/owncloudci/drone-docker-buildx:4"
-MARIADB_IMAGE = "docker.io/mariadb:10.11"
+MARIADB_IMAGE = "docker.io/mariadb:12.0"
 REDIS_IMAGE = "docker.io/redis:8"
 UBUNTU_IMAGE = "docker.io/owncloud/ubuntu:22.04"
 STANDALONE_CHROME_DEBUG_IMAGE = "docker.io/selenium/standalone-chrome-debug:3.141.59-oxygen"