Change become arguments to boolean

Changed all 'become: ' values from 'yes' to 'true' to satisfy the schema
(and also make the lsp shut up).

roles/ntfy/tasks/main.yml

@@ -4,13 +4,13 @@
     path: "{{ ntfy_upstream_file_dir }}"
     state: directory
     mode: '0755'
-  become: yes
+  become: true
 
 - name: Move ntfy configuration file to target dir
   ansible.builtin.template:
     src: "server.yml.j2"
     dest: "{{ ntfy_upstream_file_dir }}/server.yml"
-  become: yes
+  become: true
   notify: "update ntfy upstream"
 
 ## install ntfy container
@@ -21,7 +21,7 @@
       curl localhost:2019/id/{{ stack_name }}_upstream/
   register: result
   changed_when: (result.stdout | from_json) != (lookup('template', 'upstream.json.j2') | from_yaml)
-  become: yes
+  become: true
   notify: "update ntfy upstream"
 
 - name: Deploy ntfy to swarm
@@ -31,7 +31,7 @@
     prune: yes
     compose:
       - "{{ stack_compose }}"
-  become: yes
+  become: true
   tags:
     - docker-swarm
   notify: "update ntfy upstream"