lint: ansible-lint suggested updates

roles/podman_host/tasks/check_subid.yml

@@ -15,8 +15,8 @@
     path: /etc/subuid
     regexp: '^{{ _podman_host_rootless_user }}:.*$'
     state: absent
-  register: uid_line_found
-  check_mode: yes
+  register: _podman_host_uid_line_found
+  check_mode: true
   failed_when: false
   changed_when: false
 
@@ -25,17 +25,17 @@
     path: /etc/subgid
     regexp: '^{{ _podman_host_rootless_user_group.ansible_facts.getent_group | first }}:.*$'
     state: absent
-  register: gid_line_found
-  check_mode: yes
+  register: _podman_host_gid_line_found
+  check_mode: true
   failed_when: false
   changed_when: false
 
 - name: Podman Host | AUDIT | Assert that user is in subuid file exactly once
   ansible.builtin.assert:
     that:
-      - uid_line_found.found == 1
+      - _podman_host_uid_line_found.found == 1
 
 - name: Podman Host | AUDIT | Assert that group is in subgid file exactly once
   ansible.builtin.assert:
     that:
-      - gid_line_found.found == 1
+      - _podman_host_gid_line_found.found == 1