GRM-34: fix: install git-cliff to user-writable dir and fix archlinux idempotence

ansible/roles/gitea-runner/tasks/rootless_docker.yml

@@ -45,6 +45,12 @@
     state: present
   when: ansible_facts['os_family'] == 'Debian'
 
+- name: Update pacman cache (Arch Linux)
+  community.general.pacman:
+    update_cache: true
+  when: ansible_facts['os_family'] == 'Archlinux'
+  changed_when: false
+
 - name: Install rootless Docker dependencies (Arch Linux)
   community.general.pacman:
     name:
@@ -54,7 +60,6 @@
       - fuse-overlayfs
       - rsync
     state: present
-    update_cache: true
   when: ansible_facts['os_family'] == 'Archlinux'
 
 - name: Check if rootless Docker is already set up