Resolve "wrong use of systemd templates for validation cleanup service"

Fixes #1 (closed)-wrong-use-of-systemd-templates-for-validation-cleanup-service

Proposed Changes

• use %i in systemd timer declaration to make sure that the correct service is called when the timer triggers
• create multiple timers through loop in Ansible task to make sure that every service has an affiliated timer that it's triggered by

molecule/resources/playbooks/prepare.yml

@@ -22,7 +22,7 @@
           become: true
         - name: add repo URL to sources.list
           ansible.builtin.apt_repository:
-            repo: "deb https://sdvdebianrepo.slub-dresden.de/deb-repository bullseye main"
+            repo: "deb https://sdvdebianrepo.slub-dresden.de/deb-repository bookworm main"
             state: present
             update_cache: true
             mode: "0644"