Fix idempotence using dnf_config_manager.

Author: geerlingguy

tasks/main.yml

@@ -8,10 +8,10 @@
     php_memcached_package: "{{ __php_memcached_package }}"
   when: php_memcached_package is not defined
 
-# Enable CRB repository (RedHat-based systems).
 - name: Enable CRB repository (RedHat-based systems).
-  command: dnf config-manager --set-enabled crb
-  ignore_errors: true
+  community.general.dnf_config_manager:
+    name: crb
+    state: enabled
   when: ansible_os_family == 'RedHat'
 
 - name: Install PHP Memcached extension (RedHat).