Refactor Ansible tasks and templates for improved consistency and clarity

roles/common/tasks/cron.yml

@@ -1,6 +1,6 @@
 ---
 - name: (cron.yml) Set env entries in user crontabs
-  cron:
+  ansible.builtin.cron:
     name: "{{ item.name }}"
     env: "yes"
     user: '{{ item.user | default("root") }}'
@@ -14,7 +14,7 @@
     - user_crontab
 
 - name: (cron.yml) Set special time entries in user crontabs
-  cron:
+  ansible.builtin.cron:
     name: "{{ item.name }}"
     special_time: "{{ item.special_time }}"
     user: '{{ item.user | default("root") }}'
@@ -28,7 +28,7 @@
     - user_crontab
 
 - name: (cron.yml) Set normal entries in user crontabs
-  cron:
+  ansible.builtin.cron:
     name: "{{ item.name }}"
     minute: "{{ item.minute | default(omit) }}"
     hour: "{{ item.hour | default(omit) }}"