refactor: using latest ansible module to be more future-proof and support latest ansible versions

Ansible-lint:
```
Include has some unintuitive behaviours depending on if it is running in a static or dynamic in play or in playbook context, in an effort to clarify behaviours we are moving to a new set modules (ansible.builtin.include_tasks, ansible.builtin.include_role, ansible.builtin.import_playbook, ansible.builtin.import_tasks) that have well established and clear behaviours.
This module will still be supported for some time but we are looking at deprecating it in the near future.
```

Fix: I have decided to go for ansible include_tasks module because it is more versatile and on a par with this module (for more info about differences between new modules, see [here](https://docs.ansible.com/ansible/latest/collections/ansible/builtin/include_module.html)

tasks/main.yml

@@ -30,7 +30,7 @@
   when: ynh_file_install.stat.exists == False
 
 - name: Create extra domains
-  ansible.builtin.include: domains.yml
+  ansible.builtin.include_tasks: domains.yml
   when: ynh_extra_domains
 
 - name: Run first Yunohost diagnosis
@@ -41,9 +41,9 @@
   changed_when: False
 
 - name: Add Yunohost users
-  ansible.builtin.include: users.yml
+  ansible.builtin.include_tasks: users.yml
   when: ynh_users
 
 - name: Install Yunohost apps
-  ansible.builtin.include: apps.yml
+  ansible.builtin.include_tasks: apps.yml
   when: ynh_apps