Update mariadb Docker tag to v11.7 (#193)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

infra/mariadb/templates/statefulset.yaml

@@ -17,7 +17,7 @@ spec:
         app: mariadb
     spec:
       containers:
-        - image: mariadb:11.6
+        - image: mariadb:11.7
           imagePullPolicy: Always
           name: mariadb
           ports: