chore: rename .yaml extensions to .yml for consistency

roles/system-maintenance/tasks/main.yml

@@ -0,0 +1,19 @@
+---
+- name: Use appropriate tasks for given distribution
+  ansible.builtin.set_fact:
+    task_distro_file: "{{ ansible_os_family | lower }}.yaml"
+
+- name: Verify that the distribution is supported
+  become: false
+  ansible.builtin.stat:
+    path: "{{ role_path }}/tasks/{{ task_distro_file }}"
+  register: distro_stat_result
+  delegate_to: localhost
+
+- name: Fail if the distribution is not supported
+  ansible.builtin.fail:
+    msg: "Unsupported distribution: {{ ansible_os_family }}"
+  when: not distro_stat_result.stat.exists
+
+- name: Include distribution specific update tasks
+  ansible.builtin.include_tasks: "{{ task_distro_file }}"