Update test matrx to include MariaDB 11

MariaDB has had a 11 release for a while and this includes a 11.8 LTS release which is under the :11 tag.

Author: grooverdan

.github/workflows/ci.yml

@@ -31,6 +31,8 @@ jobs:
             rdbms: mysql:9
           - php: 8.4
             rdbms: mysql:8
+          - php: 8.4
+            rdbms: mariadb:11
           - php: 8.4
             rdbms: mariadb:10
     steps: