fix: update regex for Proxmox storage configuration to ensure 'snippets' is included

tasks/preflight-checks.yml

@@ -163,11 +163,10 @@
       ansible.builtin.lineinfile:
         path: /etc/pve/storage.cfg
         insertafter: "^dir: {{ proxmox_snippets_storage }}$"
-        regexp: '^(\\s*content\\s+)(.*)(?<!snippets)$'
-        line: '\1\2,snippets'
+        regexp: '^\s*content\s+.*(?<!snippets)$'
+        line: '\g<0>,snippets'
         backrefs: yes
-      become: true
-
+        
     - name: "[PREFLIGHT] Ensure snippets storage directory exists"
       ansible.builtin.file:
         path: "{{ proxmox_snippets_storage_path }}/snippets"