style: make ansible-lint happier

roles/mastodon/tasks/yarn.yml

@@ -1,21 +1,25 @@
 ---
 
-- name: get yarn gpg url
-  get_url:
+- name: Get yarn gpg url
+  ansible.builtin.get_url:
     url: "{{ mastodon_yarn_key_url }}"
     dest: /tmp/yarn.gpg.key
+    mode: 0644
     force: true
 
-- name: gpg dearmor key
-  shell: "gpg --dearmor --yes -o {{ mastodon_yarn_key_path }} /tmp/yarn.gpg.key"
+- name: Gpg dearmor key
+  ansible.builtin.command:
+    cmd: "gpg --dearmor --yes -o {{ mastodon_yarn_key_path }} /tmp/yarn.gpg.key"
+  changed_when: true
 
-- name: yarn source repo
-  copy:
+- name: Yarn source repo
+  ansible.builtin.copy:
     content: "deb [signed-by={{ mastodon_yarn_key_path }}] https://dl.yarnpkg.com/debian stable main"
     dest: /etc/apt/sources.list.d/yarn.list
+    mode: 0644
 
-- name: install yarn
-  apt:
+- name: Install yarn
+  ansible.builtin.apt:
     name: yarn
     state: present
     update_cache: true