fix: Update deprecated vars usage

Author: Ziwi01

ansible/roles/common/tasks/github_version.yml

@@ -16,7 +16,7 @@
 - name: "[{{ app }}] Fail if version is not null"
   ansible.builtin.fail:
     msg: 'Target version is `null`. This is probably because Github API call limit was exceeded (run `curl -s https://api.github.com/` to verify). Try again later.'
-  when: vars[app ~ '_version'] in [ '', 'null'] or vars[app ~ '_version'] | length == 0
+  when: lookup('vars', app ~ '_version') in ['', 'null'] or lookup('vars', app ~ '_version') | length == 0
 
 - name: "[{{ app }}] Set proper download URL"
   ansible.builtin.set_fact: