refactor: use Ansible good practises

test/ansible/main.yml

 ---
-- hosts: localhost
+- name: Test Ansible-lint in CI
+  hosts: localhost
 
   tasks:
     - name: Hello world
-      debug: msg="Hello!"
+      ansible.builtin.debug: msg="Hello!"
 
     - name: Create hello file
-      file: path=/tmp/hello.world state=touch
+      ansible.builtin.file:
+        path: "/tmp/hello.world"
+        state: touch
+        mode: "0600"
 
     - name: Find hello files
-      find:
+      ansible.builtin.find:
         paths: "/tmp"
         pattern: "hello.world"
 
     - name: Print dummy secret
-      debug: var=dummy
+      ansible.builtin.debug:
+        var: "dummy"