style: make ansible-lint happy

roles/postgres/tasks/main.yml

@@ -15,7 +15,7 @@
 
 - name: Populate postgresql directory
   ansible.builtin.command:
-    cmd: "/usr/lib/postgresql/{{ pg_version }}/bin/initdb -E UTF-8 /srv/postgresql/"
+    cmd: "/usr/lib/postgresql/{{ postgres_pg_version }}/bin/initdb -E UTF-8 /srv/postgresql/"
     creates: /srv/postgresql/PG_VERSION
   become: true
   become_user: postgres
@@ -24,14 +24,14 @@
 - name: Put hba configuration files
   ansible.builtin.copy:
     src: "files/pg_hba.conf"
-    dest: "/etc/postgresql/{{ pg_version }}/main/pg_hba.conf"
+    dest: "/etc/postgresql/{{ postgres_pg_version }}/main/pg_hba.conf"
     mode: "0640"
   notify: Restart postgres
 
 - name: Put main configuration files
   ansible.builtin.template:
     src: "postgresql.conf.j2"
-    dest: "/etc/postgresql/{{ pg_version }}/main/postgresql.conf"
+    dest: "/etc/postgresql/{{ postgres_pg_version }}/main/postgresql.conf"
     mode: "0644"
 
 - name: Create backup dir