Comply with linting on proxy setup

roles/mariadb/handlers/main.yml

@@ -6,7 +6,7 @@
   listen: restart_mariadb
 
 - name: Set MariaDB as restarted
-  set_fact:
+  ansible.builtin.set_fact:
     mariadb_restarted: true
   when: not mariadb_restarted
   listen: restart_mariadb

roles/mariadb/tasks/main.yml

@@ -4,7 +4,7 @@
     state: present
 
 - name: Set MariaDB restarted fact
-  set_fact:
+  ansible.builtin.set_fact:
     mariadb_restarted: false
 
 - name: Regather facts for the potentially new docker0 interface